/* Set 4 — cn: full-bleed mint bands, dense numbered rails */
:root {
  --leaf: #1b5e3b;
  --mint: #e8f6ee;
  --wash: #f3faf6;
  --ink: #143024;
  --fade: #456657;
  --line: #b7d8c6;
  --sun: #d9a441;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--wash);
  color: var(--ink);
  line-height: 1.65;
  font-size: 15px;
}
a { color: var(--leaf); }
.topbar {
  background: var(--leaf);
  color: #e9f7ef;
  font-size: 13px;
  padding: 8px 0;
}
.topbar > div, .mast, .pills-wrap, .band .inner, .site-footer .inner {
  width: min(1080px, calc(100% - 28px));
  margin: 0 auto;
}
.mast {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0 8px;
}
.brand {
  font-size: 24px;
  font-weight: 800;
  text-decoration: none;
  color: var(--leaf);
}
.pills-wrap { padding: 8px 0 18px; }
.pills { display: flex; gap: 8px; flex-wrap: wrap; }
.pills a {
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--line);
  padding: 7px 14px;
  color: var(--ink);
}
.pills a.is-current { background: var(--leaf); color: #fff; border-color: var(--leaf); }
.band { padding: 28px 0; }
.band.alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.band.hero { background: linear-gradient(90deg, #d8efe3, #f3faf6); padding: 40px 0; }
h1 { font-size: clamp(24px, 3vw, 32px); margin: 0 0 12px; }
.btn {
  display: inline-block;
  background: var(--sun);
  color: #2a1d04;
  text-decoration: none;
  font-weight: 800;
  padding: 12px 20px;
  margin: 8px 8px 0 0;
}
.btn.dark { background: var(--leaf); color: #fff; }
h2 {
  font-size: 20px;
  margin: 0 0 10px;
  padding-left: 10px;
  border-left: 6px solid var(--leaf);
}
.steps-h {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.steps-h li {
  list-style: none;
  background: var(--mint);
  padding: 12px;
  min-height: 120px;
}
.steps-h { padding: 0; margin: 0; }
.icon { width: 18px; height: 18px; fill: var(--leaf); }
.faq-item { display: grid; grid-template-columns: 220px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px dashed var(--line); }
.faq-item h3 { margin: 0; font-size: 15px; }
.site-footer { background: #10261b; color: #cfe4d6; padding: 28px 0 36px; font-size: 13px; }
.site-footer a { color: #f0d48a; }
.site-footer nav { display: flex; gap: 14px; margin: 10px 0; }
.req-table { width: 100%; border-collapse: collapse; }
.req-table th, .req-table td { border: 1px solid var(--line); padding: 8px; background: #fff; }
.req-table th { background: var(--mint); }
@media (max-width: 800px) {
  .steps-h, .faq-item { grid-template-columns: 1fr; }
}