:root {
  color-scheme: light;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  background: #f4f7f8;
  color: #172126;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #e9f4f2 0%, #f7f9fb 48%, #eef0f3 100%);
}

.shell {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 22px 16px 40px;
}

.topbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 4px 18px;
}

.eyebrow {
  margin: 0 0 6px;
  color: #55706c;
  font-size: 12px;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 18px;
}

.amount {
  flex: 0 0 auto;
  font-size: 30px;
  font-weight: 700;
  color: #0a8f62;
}

.panel {
  background: #ffffff;
  border: 1px solid #dbe4e7;
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 10px 28px rgba(35, 50, 55, 0.08);
}

.panel + .panel {
  margin-top: 14px;
}

.meta {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
}

.meta div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

dt {
  color: #69777c;
  font-size: 13px;
}

dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  font-family: Consolas, Monaco, monospace;
  font-size: 13px;
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
  color: #4d5b60;
  font-size: 14px;
}

input[type="url"] {
  width: 100%;
  height: 42px;
  border: 1px solid #cdd8dc;
  border-radius: 6px;
  padding: 0 12px;
  font-size: 15px;
}

.mode-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 6px 0 18px;
  color: #39494e;
}

.mode-row label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

button,
.link-button {
  min-height: 46px;
  border: 0;
  border-radius: 7px;
  padding: 0 16px;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}

.wechat {
  background: #0a9f64;
}

.alipay {
  background: #1677ff;
}

#copyResult {
  min-height: 32px;
  padding: 0 12px;
  background: #263238;
  font-size: 13px;
}

.link-button {
  display: inline-flex;
  align-items: center;
  margin-top: 14px;
  background: #1677ff;
}

.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

pre {
  min-height: 180px;
  max-height: 52vh;
  margin: 0;
  overflow: auto;
  padding: 12px;
  border-radius: 6px;
  background: #101820;
  color: #d7f6e8;
  font: 12px/1.55 Consolas, Monaco, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

@media (max-width: 520px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .actions {
    grid-template-columns: 1fr;
  }

  .meta div {
    grid-template-columns: 1fr;
    gap: 3px;
  }
}