:root {
  color-scheme: light;
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top, #f8db95 0%, #f6efe0 32%, #efe6d1 100%);
  color: #1f2228;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.panel {
  width: min(720px, 100%);
  background: rgba(255, 252, 245, 0.9);
  border: 1px solid rgba(94, 72, 31, 0.14);
  border-radius: 28px;
  padding: 32px;
  box-shadow: 0 30px 90px rgba(110, 82, 24, 0.15);
  backdrop-filter: blur(12px);
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  color: #8a6a20;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1;
}

.lead {
  margin: 16px 0 24px;
  font-size: 16px;
  line-height: 1.7;
  color: #4d4a41;
}

.field {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.field span {
  font-weight: 600;
}

.field input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid #dbc897;
  background: #fffdfa;
  font-size: 16px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 24px;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: #efe4c4;
  color: #6f5418;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 600;
}

.badge[data-ready="true"] {
  background: #d9f1da;
  color: #1f6b2b;
}

.badge[data-ready="false"] {
  background: #f8d7d7;
  color: #982626;
}

.hint {
  color: #5e5a52;
  font-size: 14px;
}

.paypal-box {
  min-height: 46px;
  margin-bottom: 24px;
}

.result h2 {
  margin: 0 0 12px;
  font-size: 18px;
}

.result pre {
  margin: 0;
  padding: 18px;
  border-radius: 18px;
  background: #1b1e24;
  color: #f6f2e6;
  overflow: auto;
  font-size: 13px;
  line-height: 1.5;
}

@media (max-width: 640px) {
  .panel {
    padding: 22px;
    border-radius: 22px;
  }

  h1 {
    line-height: 1.08;
  }
}