:root{--bg:#F4F7FB;--bg-soft:#FBFDFF;--panel:#FFFFFF;--panel-soft:#F7FAFE;--line:#E5ECF5;--line-strong:#D5E1EF;--text:#1C2B3A;--muted:#70839A;--brand:#2F80FF;--brand-2:#67A8FF;--brand-soft:#EEF5FF;--success:#1FA971;--warn:#F4A340;--danger:#E15C64;--shadow:0 10px 30px rgba(20,44,72,.08);--shadow-strong:0 18px 50px rgba(20,44,72,.14);--radius:18px;--radius-sm:12px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:radial-gradient(circle at top left,rgba(47,128,255,.08),transparent 28%),linear-gradient(180deg,#f8fbff,#f2f6fb);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif}body{min-width:1420px}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}#root{min-height:100vh}.hidden{display:none!important}.app-shell{display:flex;min-height:100vh}.sidebar{width:280px;background:#ffffffe6;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-right:1px solid var(--line);position:sticky;top:0;height:100vh;padding:20px 16px;overflow:auto}.brand{display:flex;align-items:center;gap:12px;padding:10px 12px 18px;margin-bottom:12px;border-bottom:1px solid var(--line)}.brand-mark{width:42px;height:42px;border-radius:15px;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 10px 24px #2f80ff3d}.brand h1{margin:0;font-size:16px}.brand p{margin:4px 0 0;font-size:12px;color:var(--muted)}.nav-title{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#96a8bc;margin:16px 12px 10px}.nav-main{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border-radius:14px;border:1px solid transparent;margin-bottom:6px;cursor:pointer;color:#3a4e63;transition:.15s ease}.nav-main:hover{background:#f7fafe;border-color:#e5eef9}.nav-main.active{background:#eef6ff;border-color:#d8e8ff;color:#1e5fc2}.nav-main small{color:#8fa4b8}.nav-sublist{margin:0 0 8px 8px;padding:0 0 0 14px;border-left:2px solid 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