*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;color:#1f2937;background:#f5f5f5}a{color:inherit;text-decoration:none}.app-header{display:flex;justify-content:space-between;align-items:center;height:56px;padding:0 24px;background:#fff;border-bottom:1px solid #e5e7eb}.header-left{display:flex;align-items:center;gap:24px}.logo{font-weight:700;font-size:18px;color:#2563eb}.nav-links{display:flex;gap:16px}.nav-links a{font-size:14px;color:#6b7280;padding:4px 0;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}.nav-links a:hover,.nav-links a.router-link-active{color:#2563eb;border-bottom-color:#2563eb}.version{font-size:12px;color:#9ca3af}.header-right{display:flex;align-items:center;gap:12px}.user-info{font-size:13px;color:#374151}.logout-btn{padding:4px 12px;border:1px solid #d1d5db;border-radius:4px;background:#fff;font-size:12px;cursor:pointer;color:#6b7280}.logout-btn:hover{background:#f3f4f6;color:#dc2626}.app-main{min-height:calc(100vh - 56px)}