:root{--bg:#f5f7fb;--panel:#fff;--text:#18212f;--muted:#748094;--line:#e7eaf0;--primary:#635bff;--primary2:#7c3aed;--danger:#e5484d;--warning:#c77d00;--success:#16885b;--sidebar:#111827;--shadow:0 14px 40px rgba(24,33,47,.08);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;color:var(--text);background:var(--bg);font-size:14px}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.app-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:248px;background:linear-gradient(180deg,#101826,#151f31);color:#d7deeb;padding:24px 18px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;gap:12px;align-items:center;padding:0 8px 24px}.brand-mark{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:linear-gradient(135deg,#7c3aed,#4f46e5);color:#fff;font-weight:800;box-shadow:0 8px 22px rgba(99,91,255,.35)}.brand-mark.large{width:58px;height:58px;border-radius:18px;font-size:18px}.brand strong,.brand span{display:block}.brand strong{font-size:16px;color:#fff}.brand span{font-size:12px;color:#8ea0b9}.nav{display:flex;flex-direction:column;gap:6px}.nav a,.sidebar-bottom a{padding:12px 14px;border-radius:11px;display:flex;align-items:center;gap:11px;color:#aeb9ca;transition:.2s}.nav a:hover,.sidebar-bottom a:hover,.nav a.active{background:#202b40;color:#fff}.nav a.active{box-shadow:inset 3px 0 0 #8b5cf6}.nav-icon{width:20px;text-align:center;font-size:17px}.sidebar-bottom{margin-top:auto;border-top:1px solid #253149;padding-top:14px}.main{margin-left:248px;min-height:100vh;display:flex;flex-direction:column}.topbar{height:88px;padding:0 34px;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:18px;position:sticky;top:0;z-index:10}.topbar h1{margin:0;font-size:21px}.topbar p{margin:3px 0 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