html,body{margin:0;padding:0;background:#f5f7fa;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,sans-serif}#app{max-width:960px;margin:0 auto;padding:16px}.card{background:#fff;border-radius:12px;padding:20px;margin-bottom:16px;box-shadow:0 2px 8px #0000000a}.tier-冲{color:#fa541c}.tier-稳{color:#52c41a}.tier-保{color:#1677ff}