:root{color:#1f2937;background:#f5f7fb;font-family:Inter,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{margin:0}.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:#f0f4f8}.auth-card{width:min(420px,100%);border-radius:8px;box-shadow:0 14px 45px #0f172a14}.brand-mark{font-size:26px;font-weight:700;letter-spacing:0}.muted{color:#64748b}.app-shell{min-height:100vh}.sider-brand{color:#fff;font-size:18px;font-weight:700;padding:20px 24px}.app-header{display:flex;justify-content:flex-end;align-items:center;background:#fff;border-bottom:1px solid #eef1f5}.user-chip{color:#475569}.app-content{padding:28px;max-width:1400px;width:100%;margin:0 auto}.section-card{margin-top:20px}.recharge-row{margin-top:24px}.loading-page{min-height:100vh;display:grid;place-items:center;color:#64748b}@media(max-width:768px){.app-content{padding:18px}.recharge-row{display:flex;flex-wrap:wrap}}