:root{--bg: #04060d;--panel: #0b1220;--panel2: #101a2e;--line: rgba(255, 255, 255, .08);--text: #dbe7ff;--dim: #7c8db0;--red: #ff5c5c;--blue: #4a9eff;--green: #2dd4a7}*{box-sizing:border-box}html,body{height:100%;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,-apple-system,sans-serif;display:flex;flex-direction:column;overflow:hidden}.ch-header{flex:none;display:flex;align-items:center;gap:18px;padding:10px 22px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#0d1626,#0a1120);flex-wrap:wrap;z-index:10}.ch-back{color:var(--dim);text-decoration:none;font-size:13px;padding:8px 14px;border:1px solid var(--line);border-radius:999px;white-space:nowrap}.ch-back:hover{color:#fff;border-color:#ffffff4d}.ch-header-title h1{margin:0;font-size:19px;font-family:Georgia,Times New Roman,serif;font-weight:500;letter-spacing:.5px}.ch-header-title 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