:root{--ink:#102526;--muted:#657674;--bg:#f4f1eb;--card:#fffdfa;--line:#dfe5df;--green:#087f68;--green2:#11a981;--nav:#06292e;--danger:#b83b3b;--shadow:0 18px 55px rgba(18,44,43,.09)}*{box-sizing:border-box}html{font-family:Tahoma,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--bg)}body{margin:0}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.shell{min-height:100vh;display:grid;grid-template-columns:260px 1fr}.sidebar{background:linear-gradient(165deg,#06292e,#031e24);color:#d8ece8;padding:28px 20px;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:12px;font-size:1.05rem;margin-bottom:34px}.brand span,.auth-mark{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#21c69a,#0b8b75);color:white;font-weight:900;box-shadow:0 12px 30px #0ab68a45}.sidebar nav{display:grid;gap:7px}.sidebar nav a{padding:12px 14px;border-radius:12px;color:#a9c3c0}.sidebar nav 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