:root {
  --bg: #f3f0ea;
  --fg: #1c1915;
  --muted: #6b645c;
  --card: #fffcf7;
  --line: rgba(28, 25, 21, 0.08);
  --precious: #1f7a4c;
  --nas: #c45c48;
  --shadow: 0 18px 40px rgba(28, 25, 21, 0.08);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--fg);
  background: var(--bg);
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(90% 60% at 10% -10%, rgba(31, 122, 76, 0.16), transparent 55%),
    radial-gradient(80% 50% at 100% 0%, rgba(196, 92, 72, 0.14), transparent 50%),
    linear-gradient(180deg, #f7f3ec 0%, #efe8de 100%);
}

.top {
  max-width: 960px;
  margin: 0 auto;
  padding: 36px 20px 8px;
}

.brand-cn {
  display: block;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-en {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.tagline {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.hero {
  margin: 0;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.hero-sub {
  margin: 10px 0 28px;
  color: var(--muted);
  font-size: 15px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

@media (max-width: 760px) {
  .cards { grid-template-columns: 1fr; }
}

.card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px 22px 22px;
  box-shadow: var(--shadow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 22px 48px rgba(28, 25, 21, 0.12);
}

.card-kicker {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.card-precious .card-kicker { color: var(--precious); }
.card-nas .card-kicker { color: var(--nas); }

.card-title {
  margin: 8px 0 10px;
  font-size: 22px;
  line-height: 1.3;
}

.card-desc {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.card-list {
  margin: 16px 0 18px;
  padding-left: 18px;
  color: var(--fg);
  font-size: 13px;
  line-height: 1.7;
}

.card-cta {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
}

.card-precious .card-cta { color: var(--precious); }
.card-nas .card-cta { color: var(--nas); }

.foot {
  max-width: 960px;
  margin: 0 auto;
  padding: 8px 20px calc(28px + env(safe-area-inset-bottom));
  text-align: center;
}

.foot-brand {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
}

.icp {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
}

.icp a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid rgba(107, 100, 92, 0.35);
}

.icp a:hover { color: var(--fg); }

.dot {
  margin: 0 8px;
  color: var(--muted);
}

.icp-note {
  margin: 6px 0 0;
  font-size: 11px;
  color: #9a9288;
}