:root{--bg:#101619;--panel:#182226;--panel2:#202d32;--line:#304047;--muted:#91a3a8;--text:#edf3f1;--green:#8bd3a7;--blue:#83c7e8;--orange:#efb66f;--red:#ef8585}*{box-sizing:border-box}body{color:var(--text);background:radial-gradient(circle at 20% 0,#203139 0,#101619 38%);margin:0;font:15px/1.45 Inter,Segoe UI,Arial,sans-serif}header{border-bottom:1px solid var(--line);background:#111a1e;justify-content:space-between;align-items:center;gap:16px;padding:20px 26px;display:flex}.brand{align-items:center;gap:13px;display:flex}.mark{background:#101619;border:1px solid #55716d;border-radius:12px;place-items:center;width:62px;height:62px;display:grid;overflow:hidden}.mark img{object-fit:contain;width:100%;height:100%;padding:3px}h1{letter-spacing:.13em;margin:0;font-size:18px}.sub{color:var(--muted);letter-spacing:.16em;font-size:11px}.demo{color:#f5c98c;letter-spacing:.12em;background:#382b1b;border:1px solid #9b713c;border-radius:7px;padding:7px 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