:root{--bg: #f0f2f5;--surface: #ffffff;--text: #1a2332;--muted: #5c6b7a;--primary: #165dff;--line: #e7e7e7;--sidebar-w: 220px;--sidebar: #1b2436;--topbar-h: 56px;--shadow: 0 1px 2px rgba(0, 0, 0, .04)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text)}.ra-shell{min-height:100vh;display:flex;background:var(--bg)}.ra-sidebar{width:var(--sidebar-w);flex-shrink:0;background:var(--sidebar);color:#fff;display:flex;flex-direction:column}.ra-brand{padding:20px 20px 12px}.ra-brand-name{font-weight:700;font-size:16px;letter-spacing:-.02em}.ra-brand-sub{margin-top:4px;font-size:12px;color:#ffffff8c}.ra-sidebar .ant-menu-dark{background:transparent}.ra-main-col{flex:1;min-width:0;display:flex;flex-direction:column}.ra-topbar{min-height:var(--topbar-h);display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:#f7f8fa;border-bottom:1px solid var(--line);gap:12px}.ra-topbar-title{font-size:16px;font-weight:600}.ra-content{flex:1;padding:16px 20px 24px;min-width:0}.ra-panel{background:var(--surface);border-radius:8px;padding:20px 20px 8px;box-shadow:var(--shadow)}.ra-login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 16px;background:linear-gradient(165deg,#eef3f6,#f5f7fa,#e8eef2)}.ra-login-card{width:min(100%,420px);background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:28px 24px;box-shadow:0 0 24px #0000000a}