/* SET4 cn: dark header + banded 3-col forest */
:root {
  --forest: #1b4332;
  --leaf: #2d6a4f;
  --moss: #40916c;
  --bg: #f6fff8;
  --ink: #081c15;
  --line: #b7e4c7;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.7; }
.topbar-dark {
  background: var(--forest);
  color: #fff;
  position: sticky; top: 0; z-index: 10;
}
.topbar-dark .row { max-width: 1180px; margin: 0 auto; padding: 16px 20px; display: flex; justify-content: space-between; align-items: center; }
.brand { color: #fff; font-weight: 800; letter-spacing: 0.06em; text-decoration: none; font-size: 18px; }
.nav a { color: #d8f3dc; text-decoration: none; margin-left: 16px; padding: 6px 0; }
.nav a.current { border-bottom: 2px solid #95d5b2; }
.band { padding: 48px 20px; }
.band-inner { max-width: 1180px; margin: 0 auto; }
.band.alt { background: #d8f3dc; }
.band.dark { background: var(--leaf); color: #fff; }
.band.dark h2 { color: #fff; }
.hero-band { background: linear-gradient(180deg, #1b4332, #2d6a4f); color: #fff; padding: 60px 20px; }
.hero-band h1 { max-width: 900px; font-size: 32px; margin: 0 0 14px; }
.btn {
  display: inline-block; background: #95d5b2; color: #081c15; text-decoration: none;
  font-weight: 800; padding: 13px 24px; border-radius: 2px; margin-right: 8px;
}
.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.trio article { background: #fff; border-top: 4px solid var(--moss); padding: 18px; }
h2 { font-size: 25px; color: var(--forest); }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { border: 1px solid var(--line); padding: 10px; }
th { background: var(--forest); color: #fff; }
.ol-steps { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 0; }
.ol-steps li { background: #fff; padding: 14px 16px; list-style-position: inside; }
.news-item { background: #fff; padding: 14px; margin-bottom: 10px; border-left: 5px solid var(--moss); }
.faq h3 { font-size: 17px; margin-bottom: 6px; color: var(--forest); }
.site-foot { background: #081c15; color: #b7e4c7; padding: 28px 20px 40px; font-size: 13px; }
.site-foot .band-inner { max-width: 1180px; margin: 0 auto; }
@media (max-width: 860px) {
  .trio, .ol-steps { grid-template-columns: 1fr; }
  .nav a { margin-left: 10px; }
}