/* 第4套：步骤时间轴 · 单轨数字 ·  greenery */
:root {
  --green: #1b4332;
  --leaf: #2d6a4f;
  --mint: #d8f3dc;
  --paper: #f7fff8;
  --ink: #081c15;
  --muted: #40916c;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Trebuchet MS", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.75;
  font-size: 16px;
}
a { color: var(--leaf); }
.bar {
  background: var(--green);
  color: #e8f8ee;
  padding: 18px 0;
}
.bar-inner {
  width: min(800px, calc(100% - 36px));
  margin: 0 auto;
}
.logo { color: #fff; text-decoration: none; font-weight: 700; font-size: 20px; }
.nav { list-style: none; display: flex; gap: 22px; margin-top: 10px; }
.nav a { color: #cde7d6; text-decoration: none; font-size: 15px; }
.nav a.current { color: #fff; border-bottom: 2px solid #95d5b2; }
.hero {
  background: var(--mint);
  padding: 42px 0 34px;
}
.hero-inner, .rail {
  width: min(800px, calc(100% - 36px));
  margin: 0 auto;
}
.hero h1 { font-size: 28px; line-height: 1.4; margin-bottom: 12px; }
.lead { margin-bottom: 18px; color: #1b4332; }
.btn {
  display: inline-block;
  background: var(--green);
  color: #fff;
  text-decoration: none;
  padding: 12px 20px;
}
.btn-plain { margin-left: 8px; color: var(--green); }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.pills a {
  background: #fff;
  border: 1px solid var(--leaf);
  color: var(--green);
  text-decoration: none;
  padding: 8px 10px;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.rail { padding: 28px 0 48px; }
.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  padding: 22px 0 26px;
  border-left: 3px solid #95d5b2;
  margin-left: 24px;
  padding-left: 20px;
  position: relative;
}
.num {
  position: absolute;
  left: -40px;
  top: 22px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--leaf);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step h2 { font-size: 21px; margin-bottom: 10px; color: var(--green); }
.step p { margin-bottom: 10px; }
.step ul { margin: 0 0 10px 18px; }
.step ol { margin: 0 0 10px 20px; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: #fff;
}
th, td { border: 1px solid #b7e4c7; padding: 8px; text-align: left; }
th { background: var(--green); color: #fff; }
.faq-box { background: #fff; border: 1px dashed var(--leaf); padding: 14px 16px; margin-bottom: 12px; }
.faq-box h3 { font-size: 16px; margin-bottom: 6px; }
.site-footer {
  background: var(--green);
  color: #d8f3dc;
  padding: 22px 0 30px;
  font-size: 13px;
}
.site-footer .hero-inner a { color: #fff; margin-right: 12px; }
.site-footer p { margin-top: 8px; }
@media (max-width: 640px) {
  .step { margin-left: 16px; }
}