:root{--nav:#13243a;--nav2:#1c3553;--blue:#2474d2;--blue2:#eaf3ff;--ink:#182230;--muted:#667085;--line:#e4e7ec;--bg:#f5f7fa;--white:#fff;--green:#15803d;--red:#b42318;--shadow:0 1px 3px rgba(16,24,40,.08)}*{box-sizing:border-box}html,body{max-width:100%;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.45 system-ui,-apple-system,"Segoe UI",sans-serif}.sidebar{position:fixed;inset:0 auto 0 0;width:240px;background:var(--nav);color:#fff;display:flex;flex-direction:column;padding:24px 16px}.brand{display:flex;gap:12px;align-items:center;font-weight:800;letter-spacing:.14em;font-size:18px;padding:0 8px 28px}.brand>span,.login-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(145deg,#4da1ff,#1d61b7);font-size:22px}.brand small{display:block;font-size:10px;font-weight:500;letter-spacing:.05em;color:#aac0d8}.sidebar nav{display:grid;gap:5px}.sidebar nav a{color:#c7d4e3;text-decoration:none;padding:11px 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