* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; padding: 32px 16px; display: grid; place-items: center; background: #f3f7f5; color: #20352a; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif; }
.scan-card { width: min(100%, 440px); padding: 32px 24px; border: 1px solid #dfe9e3; border-radius: 18px; background: #fff; box-shadow: 0 16px 48px #1c422e12; }
header { text-align: center; }
.wechat-mark { display: grid; place-items: center; width: 52px; height: 52px; margin: 0 auto 18px; border-radius: 16px; background: #07c160; color: white; font-size: 23px; font-weight: 700; }
h1 { margin: 0; font-size: 25px; }
header p { margin: 12px 0 0; color: #68786f; font-size: 14px; line-height: 1.7; }
form { display: grid; gap: 12px; margin-top: 28px; }
label { font-size: 14px; font-weight: 600; }
input, button { width: 100%; min-height: 48px; border-radius: 9px; font: inherit; }
input { min-width: 0; border: 1px solid #cedbd3; padding: 10px 12px; background: white; color: #20352a; }
input:focus-visible, button:focus-visible { outline: 3px solid #86d9ab; outline-offset: 2px; }
button { border: 0; background: #07a953; color: white; font-weight: 600; cursor: pointer; }
button:disabled { opacity: .6; cursor: wait; }
.account-info { margin-top: 20px; border: 1px solid #dcebe2; border-radius: 14px; overflow: hidden; background: #fbfefc; }
.payer-banner { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; background: #e9f8ef; border-bottom: 1px solid #d7eadf; }
.payer-banner span { color: #4a6557; font-size: 14px; }
.payer-banner strong { color: #087c42; font-size: 22px; line-height: 1.2; text-align: right; overflow-wrap: anywhere; }
.account-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; padding: 16px; }
.account-grid > div { min-width: 0; display: grid; gap: 5px; }
.account-grid .wide { grid-column: 1 / -1; }
.account-grid span { color: #7a8b81; font-size: 12px; }
.account-grid strong { color: #253b30; font-size: 14px; font-weight: 600; line-height: 1.55; overflow-wrap: anywhere; }
.confirm-hint { margin: 0; padding: 0 16px 15px; color: #8a6d1d; font-size: 12px; line-height: 1.6; text-align: center; }
#result { margin-top: 18px; padding: 16px 10px; border-radius: 12px; background: #f6faf8; text-align: center; overflow-wrap: anywhere; }
#message { margin: 0; line-height: 1.7; }
#qr { display: block; width: min(100%, 300px); height: auto; margin: 14px auto 0; background: white; }
#hint { font-size: 13px; line-height: 1.8; color: #68786f; margin-bottom: 0; }
#result[data-status="ERROR"] { color: #b42318; }
#result[data-status="COMPLETED"] { color: #087c42; font-weight: 600; }
[hidden], #qr[hidden] { display: none; }
@media (max-width: 520px) {
  body { place-items: start center; padding-top: 20px; }
  .scan-card { padding: 28px 20px; }
  .payer-banner { align-items: flex-start; }
  .payer-banner strong { font-size: 20px; }
  .account-grid { grid-template-columns: 1fr; }
  .account-grid .wide { grid-column: auto; }
}