:root {
  --green: #07c160;
  --text: #111827;
  --muted: #6b7280;
  --bg: #f3f4f6;
  --card: #ffffff;
  --line: #e5e7eb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }
.top {
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.top .inner, footer .inner, main {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 20px;
}
.top .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand { display: flex; gap: 12px; align-items: center; }
.brand .mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--green); color: #fff;
  display: grid; place-items: center; font-weight: 700;
}
.brand strong { display: block; font-size: 18px; }
.brand em { color: var(--muted); font-style: normal; font-size: 12px; }
.link {
  border: 1px solid var(--line);
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--text);
  background: #fff;
}
.link:hover { border-color: var(--green); color: var(--green); text-decoration: none; }
.hero {
  margin: 28px 20px;
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
  background: linear-gradient(160deg, #ecfdf5, #fff 55%);
  border: 1px solid #d1fae5;
  border-radius: 18px;
  padding: 36px 28px;
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--green);
  font-size: 13px;
  font-weight: 600;
}
.hero h1 {
  margin: 0 0 12px;
  font-size: 36px;
  letter-spacing: 1px;
}
.lead { margin: 0 0 18px; color: #374151; font-size: 16px; max-width: 640px; }
.points { margin: 0; padding-left: 18px; color: #374151; }
.cards {
  max-width: 920px;
  margin: 0 auto 24px;
  padding: 0 20px;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.cards article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 16px;
}
.cards h2 { margin: 0 0 8px; font-size: 16px; }
.cards p, .cards ol { margin: 0; color: var(--muted); font-size: 14px; }
.cards ol { padding-left: 18px; }
.note {
  max-width: 920px;
  margin: 0 auto 40px;
  padding: 18px 20px;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 14px;
}
.note h2 { margin: 0 0 8px; font-size: 15px; }
.note p { margin: 0; color: #9a3412; font-size: 13px; }
footer {
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 18px 0 28px;
  color: var(--muted);
  font-size: 13px;
}
code { background: #f3f4f6; padding: 1px 6px; border-radius: 4px; }