:root{--bg:#071018;--panel:#0d1924;--panel2:#101f2d;--line:#203447;--text:#eaf4fb;--muted:#86a0b4;--cyan:#39d7ff;--green:#39e6a0;--red:#ff6174;--yellow:#ffcf5a;--radius:16px;--shadow:0 18px 50px rgba(0,0,0,.28)}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 75% 0,#0a2b3b 0,transparent 30%),var(--bg);color:var(--text);font:14px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}.shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:240px;padding:24px 18px;border-right:1px solid var(--line);background:rgba(7,16,24,.92);backdrop-filter:blur(16px);display:flex;flex-direction:column;z-index:10}.brand{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;padding:0 8px 24px}.brand-mark,.login-logo{display:grid;place-items:center;background:linear-gradient(135deg,var(--cyan),#3979ff);color:#021019;font-weight:900;box-shadow:0 0 30px 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