:root{--echo-bg:#F7F8F3;--echo-surface:#FFF;--echo-primary:#176B5B;--echo-text:#253832;--echo-muted:#768582;--echo-border:#DFE6E0;--echo-sage:#E9F0E7;--echo-price:#F47C37;--echo-success:#24845E;--echo-error:#C74A35;--echo-radius:12px;--echo-font:"Microsoft YaHei","PingFang SC",system-ui,sans-serif}
.echo-icon{width:20px;height:20px;display:inline-block;vertical-align:middle;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.echo-icon-mask{display:inline-block;width:20px;height:20px;background:currentColor;mask:var(--echo-icon-url) center/contain no-repeat;-webkit-mask:var(--echo-icon-url) center/contain no-repeat}
.echo-logo{display:block;width:218px;height:auto}
.echo-payment-mark{width:28px;height:28px;object-fit:contain}