:root{--bg: #f5f7fb;--panel: #ffffff;--ink: #172033;--muted: #667085;--line: #d8e0ea;--soft: #edf2f7;--primary: #0f766e;--blue: #1d4ed8;--orange: #9a3412;--violet: #7c3aed;--danger: #b42318;--ok: #067647;--shadow: 0 14px 34px rgba(15, 23, 42, .08)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,select{font:inherit}button{border:0;cursor:pointer}.hidden{display:none!important}.shell{min-height:100vh;display:grid;grid-template-columns:248px minmax(0,1fr)}.rail{background:#0b1220;color:#e7eef9;padding:20px 16px;display:flex;flex-direction:column;gap:22px}.brand{display:flex;gap:12px;align-items:center;min-height:50px}.brand-mark{width:42px;height:42px;border-radius:8px;display:grid;place-items:center;background:var(--primary);color:#fff;font-weight:800}.brand strong,.brand small{display:block}.brand small{margin-top:2px;color:#aab8cc}.nav{display:grid;gap:14px}.nav-group{display:grid;gap:6px}.nav-group p{margin:0 0 2px;padding:0 12px;color:#7f8da3;font-size:12px;font-weight:800;letter-spacing:0}.nav button,.logout{min-height:42px;border-radius:8px;padding:0 12px;text-align:left;background:transparent;color:#cad6e6}.nav button.active,.nav button:hover,.logout:hover{background:#172033;color:#fff}.logout{margin-top:auto;border:1px solid #283449}.stage{min-width:0;padding:28px}.login-wrap{min-height:calc(100vh - 56px);display:grid;place-items:center}.login{width:min(420px,100%);display:grid;gap:18px;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:28px;box-shadow:var(--shadow)}h1,h2,h3,p{margin-top:0}.login h1{margin-bottom:4px}label{display:grid;gap:8px;color:var(--muted);font-size:14px}input,select{width:100%;min-height:40px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);padding:0 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