:root{--nav:#0e2138;--nav2:#172f4e;--primary:#0b8b7a;--primary2:#16a394;--soft:#eff7f6;--ink:#14243a;--muted:#6b7a90;--line:#e5ebf2;--bg:#f5f7fb;--danger:#d13e4c;--warn:#b7791f;--success:#16886d;--shadow:0 15px 40px rgba(19,42,75,.07)}*{box-sizing:border-box}html{font-size:15px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Tahoma,"Segoe UI",Arial,sans-serif;line-height:1.55}.app{display:flex;min-height:100vh}.sidebar{width:268px;background:linear-gradient(180deg,var(--nav),var(--nav2));color:#eef7ff;position:fixed;right:0;top:0;bottom:0;z-index:20;padding:20px 13px;overflow-y:auto}.brand{display:flex;align-items:center;gap:10px;padding:6px 10px 22px;border-bottom:1px solid #ffffff18;margin-bottom:15px}.brand-mark{height:42px;width:42px;display:grid;place-items:center;border-radius:13px;background:linear-gradient(135deg,#23c4b3,#0f766e);font-weight:900;font-size:21px}.brand b{font-size:16px;display:block}.brand 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