:root{--navy:#102c40;--navy2:#173b57;--teal:#1f8a83;--bg:#f3f6f8;--card:#fff;--line:#dfe7eb;--text:#17262f;--muted:#667984;--danger:#c94e4e;--warn:#b07819;--shadow:0 10px 30px rgba(19,50,66,.08)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--text);background:var(--bg)}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}.app-shell{display:grid;grid-template-columns:238px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;background:linear-gradient(180deg,var(--navy),#0a2231);color:#dce8ed;padding:24px 16px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px;padding:4px 8px 26px;font-weight:750;font-size:18px}.brand 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