:root {
  --bg-start: #f6f0e4;
  --bg-end: #eadcc5;
  --paper: rgba(255, 251, 244, 0.94);
  --paper-strong: #fffaf1;
  --line: rgba(68, 51, 34, 0.18);
  --line-strong: rgba(68, 51, 34, 0.68);
  --text: #241b12;
  --muted: rgba(36, 27, 18, 0.74);
  --accent: #8b5f33;
  --shadow: 0 24px 48px rgba(88, 66, 43, 0.12);
}

* {
  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(--text);
  background:
    radial-gradient(circle at top left, rgba(196, 153, 112, 0.18), transparent 24%),
    radial-gradient(circle at top right, rgba(125, 96, 64, 0.1), transparent 20%),
    linear-gradient(180deg, var(--bg-start) 0%, var(--bg-end) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.08)),
    repeating-linear-gradient(
      180deg,
      rgba(103, 78, 49, 0.03) 0,
      rgba(103, 78, 49, 0.03) 1px,
      transparent 1px,
      transparent 34px
    );
}

.page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 20px;
}

.hero,
.qr-card,
.footer-inner {
  position: relative;
  overflow: hidden;
  background: var(--paper);
  border: 2px solid var(--line-strong);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero::before,
.qr-card::before,
.footer-inner::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px dashed var(--line);
  border-radius: 20px;
  pointer-events: none;
}

.hero {
  padding: 40px 40px 32px;
  text-align: center;
}

.brand {
  margin: 0 0 12px;
  color: var(--accent);
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  font-size: clamp(32px, 4.8vw, 54px);
  letter-spacing: 0.08em;
}

.hero h1 {
  margin: 0;
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  font-size: clamp(34px, 4.5vw, 58px);
  line-height: 1.12;
}

.intro {
  width: min(820px, 100%);
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.9;
}

.qr-section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.qr-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 236px;
  gap: 24px;
  align-items: center;
  padding: 28px;
}

.qr-copy {
  position: relative;
  z-index: 1;
}

.card-kicker {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.qr-copy h2 {
  margin: 0;
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  font-size: 30px;
  line-height: 1.24;
}

.qr-copy p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.card-tip {
  font-weight: 600;
}

.qr-media {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  min-height: 236px;
  padding: 16px;
  background: var(--paper-strong);
  border: 2px solid var(--line-strong);
  border-radius: 22px;
}

.qr-media img {
  display: block;
  width: 100%;
  max-width: 204px;
  height: auto;
}

.footer {
  padding: 0 16px 28px;
}

.footer-inner {
  width: min(1120px, 100%);
  margin: 24px auto 0;
  padding: 22px 28px;
  text-align: center;
}

.footer-title {
  margin: 0 0 8px;
  color: var(--text);
  font-family: "STKaiti", "KaiTi", "Songti SC", serif;
  font-size: 24px;
}

.footer p {
  position: relative;
  z-index: 1;
  margin: 6px 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

@media (max-width: 920px) {
  .qr-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .page {
    width: min(100% - 20px, 100%);
    padding-top: 16px;
  }

  .hero,
  .qr-card,
  .footer-inner {
    border-radius: 22px;
  }

  .hero {
    padding: 28px 20px 24px;
  }

  .qr-card {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 20px;
  }

  .qr-media {
    order: -1;
    min-height: auto;
  }

  .intro {
    font-size: 16px;
  }

  .qr-copy h2 {
    font-size: 24px;
  }
}