:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #647084;
  --line: #dfe5ee;
  --alipay: #1677ff;
  --wechat: #16a34a;
  --shadow: 0 22px 70px rgba(31, 48, 76, 0.13);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    linear-gradient(135deg, rgba(22, 119, 255, 0.11), transparent 34%),
    linear-gradient(315deg, rgba(22, 163, 74, 0.1), transparent 32%),
    var(--bg);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
}

.pay-panel {
  width: min(980px, 100%);
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid rgba(223, 229, 238, 0.9);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.heading {
  text-align: center;
  margin-bottom: 30px;
}

.eyebrow,
.qr-label {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--alipay);
}

h1,
h2,
.subtitle,
.hint {
  margin: 0;
}

h1 {
  margin-top: 8px;
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.08;
}

.subtitle {
  margin-top: 14px;
  color: var(--muted);
  font-size: 17px;
}

.qr-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.qr-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
}

.qr-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

h2 {
  margin-top: 5px;
  font-size: clamp(21px, 3vw, 28px);
  line-height: 1.2;
}

.badge {
  flex: 0 0 auto;
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
}

.badge-alipay {
  color: #075ec7;
  background: #e8f2ff;
}

.badge-aggregate {
  color: #0b7a35;
  background: #e8f8ee;
}

.qr-box {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    linear-gradient(45deg, #f9fbff 25%, transparent 25%),
    linear-gradient(-45deg, #f9fbff 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #f9fbff 75%),
    linear-gradient(-45deg, transparent 75%, #f9fbff 75%),
    #ffffff;
  background-position:
    0 0,
    0 10px,
    10px -10px,
    -10px 0;
  background-size: 20px 20px;
}

.qr-box img {
  display: block;
  width: min(84%, 330px);
  height: min(84%, 330px);
  object-fit: contain;
}

.qr-box.is-missing::before {
  content: attr(data-placeholder);
  width: min(78%, 280px);
  padding: 18px;
  border: 1px dashed #aab6c7;
  border-radius: 14px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.9);
  font-size: 15px;
  line-height: 1.55;
  text-align: center;
}

.qr-box.is-missing img {
  display: none;
}

.hint {
  color: var(--muted);
  font-size: 15px;
  text-align: center;
}

@media (max-width: 720px) {
  .page {
    min-height: auto;
    padding: 14px 10px 24px;
    align-items: start;
  }

  .pay-panel {
    padding: 20px 14px;
    border-radius: 22px;
  }

  .heading {
    margin-bottom: 20px;
  }

  h1 {
    font-size: 32px;
    line-height: 1.14;
  }

  .subtitle {
    font-size: 15px;
    line-height: 1.55;
  }

  .qr-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .qr-card {
    gap: 14px;
    padding: 16px;
    border-radius: 16px;
  }

  .qr-title-row {
    align-items: center;
  }

  h2 {
    font-size: 22px;
  }

  .qr-box img {
    width: 86%;
    height: 86%;
  }
}

@media (max-width: 390px) {
  .pay-panel {
    padding: 18px 10px;
    border-radius: 18px;
  }

  h1 {
    font-size: 28px;
  }

  .qr-card {
    padding: 14px;
  }

  .badge {
    padding: 6px 8px;
    font-size: 11px;
  }

  h2 {
    font-size: 20px;
  }

  .qr-box.is-missing::before {
    width: 84%;
    padding: 14px;
    font-size: 14px;
  }
}