:root{--sg-brand-navy:#0A4DBC;--sg-brand-blue:#3B82F6;--sg-brand-teal:#14B8A6;--sg-brand-green:#22C55E;--sg-bg:#F1F5F9;--sg-surface:#FFFFFF;--sg-text:#1F2937;--sg-muted:#64748B;--sg-border:#E2E8F0;--sg-danger:#DC2626;--sg-warning:#D97706;--sg-radius:16px;--sg-shadow:0 10px 30px rgba(15,23,42,.07)}*{box-sizing:border-box}html{min-height:100%;background:var(--sg-bg)}body{margin:0;min-height:100vh;background:linear-gradient(180deg,#fff 0,var(--sg-bg) 38%,#fff 100%);color:var(--sg-text);font-family:'Poppins',ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:15px;line-height:1.5}button,input,select,textarea{font:inherit}button{cursor:pointer}.main{width:min(1180px,calc(100% - 32px));margin:0 auto;padding:32px 0}.login-shell{max-width:520px;padding-top:10vh}.card{background:rgba(255,255,255,.97);border:1px solid var(--sg-border);border-radius:var(--sg-radius);box-shadow:var(--sg-shadow);padding:24px}.login-card{box-shadow:0 20px 55px 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