:root {
  --bg: #f6efe7;
  --card: rgba(255, 255, 255, 0.88);
  --text: #3f3127;
  --muted: #7b695d;
  --accent: #d88d57;
  --accent-soft: rgba(216, 141, 87, 0.14);
  --border: rgba(170, 135, 109, 0.18);
  --shadow: rgba(109, 76, 52, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 216, 173, 0.45), transparent 28%),
    radial-gradient(circle at top right, rgba(255, 239, 211, 0.7), transparent 30%),
    linear-gradient(180deg, #fbf5ef 0%, #f6efe7 100%);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 40px 20px 72px;
}

.hero {
  padding: 28px;
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(255,255,255,0.94), rgba(252,241,229,0.92));
  border: 1px solid var(--border);
  box-shadow: 0 18px 38px var(--shadow);
}

.brand {
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}

.tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.lead {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.card {
  padding: 20px;
  border-radius: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: 0 14px 28px var(--shadow);
}

.card h2,
.card h3 {
  margin: 0 0 8px;
}

.card p,
.card li {
  color: var(--muted);
  line-height: 1.7;
}

.section {
  margin-top: 20px;
}

.lang {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
}

.doc {
  margin-top: 20px;
  padding: 28px;
  border-radius: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: 0 18px 38px var(--shadow);
}

.doc h1 {
  margin-top: 0;
  font-size: 34px;
}

.doc h2 {
  margin-top: 28px;
  font-size: 21px;
}

.doc p,
.doc li {
  line-height: 1.8;
  color: var(--muted);
}

.notice {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 247, 236, 0.92);
  border: 1px solid rgba(216, 141, 87, 0.2);
  color: var(--text);
}

.footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 640px) {
  .shell {
    padding: 24px 16px 48px;
  }

  .hero,
  .doc {
    padding: 22px;
    border-radius: 24px;
  }

  .brand {
    font-size: 34px;
  }
}