:root {
  --sage: #2d5a3d;
  --leaf: #3f7a52;
  --linen: #f7f3ea;
  --clay: #c4622d;
  --ink: #243028;
  --card: #fffdf7;
  --rule: #ddd4c2;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--linen);
  color: var(--ink);
  font-family: Georgia, "Songti SC", "SimSun", "Microsoft YaHei", serif;
  line-height: 1.8;
}

.ribbon {
  background: var(--sage);
  color: #f3efe4;
  text-align: center;
  padding: 10px 12px;
  font-size: 13px;
  letter-spacing: 0.08em;
}
.ribbon a { color: #fff; text-decoration: none; font-weight: 700; }

.menu {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 14px 10px 0;
}
.menu a {
  color: var(--sage);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 999px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 14px;
}
.menu a.here { background: var(--sage); color: #fff; }

.column { width: min(720px, calc(100% - 32px)); margin: 0 auto; padding: 12px 0 40px; }

.intro h1 {
  font-size: 30px;
  line-height: 1.4;
  margin: 20px 0 12px;
  color: var(--sage);
}
.dl {
  display: inline-block;
  background: var(--clay);
  color: #fff;
  text-decoration: none;
  padding: 12px 22px;
  border-radius: 24px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 16px;
}
.dl2 {
  display: inline-block;
  margin-left: 8px;
  color: var(--sage);
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  margin: 28px 0;
}
.num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--sage);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-family: "Segoe UI", sans-serif;
}
.step h2 {
  margin: 8px 0 8px;
  font-size: 22px;
  color: var(--leaf);
}
.note {
  background: var(--card);
  border: 1px solid var(--rule);
  padding: 16px 18px;
  margin: 12px 0;
}

.ask { margin: 18px 0; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; }
.ask h3 { font-size: 16px; margin: 0 0 6px; color: var(--sage); }
.ask p { margin: 0 0 8px; }

.bottom {
  background: #1d3b29;
  color: #dce6de;
  padding: 28px 16px;
  font-size: 13px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  text-align: center;
}
.bottom a { color: #cfe8d4; margin: 0 10px; }

@media (max-width: 640px) {
  .step { grid-template-columns: 1fr; }
}