:root {
  color-scheme: light;
  --bg: #eef2f0;
  --card: #ffffff;
  --ink: #1a1f1c;
  --muted: #5f6b64;
  --line: #d7e0da;
  --accent: #2f6b4f;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top, rgba(47, 107, 79, 0.08), transparent 42%),
    linear-gradient(180deg, #f7faf8 0%, var(--bg) 100%);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px 40px;
}

.card {
  width: min(100%, 420px);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px 24px 24px;
  text-align: center;
  box-shadow: 0 12px 40px rgba(26, 31, 28, 0.06);
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-size: 24px;
  line-height: 1.3;
  font-weight: 650;
}

.hint {
  margin: 10px 0 0;
  font-size: 15px;
  color: var(--muted);
}

.qr-wrap {
  margin: 24px auto 0;
  width: min(100%, 280px);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fafcfa;
  overflow: hidden;
}

.qr-image {
  width: 100%;
  height: auto;
  display: block;
  -webkit-touch-callout: default;
  user-select: none;
}

.tip {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

@media (max-width: 360px) {
  .card {
    padding: 24px 18px 20px;
  }

  h1 {
    font-size: 22px;
  }
}