/* 第4套：步骤驱动 · 十二栏网格 + 编号圆点 · 森绿 */
:root {
  --g0: #0e3b2e;
  --g1: #1f6b4e;
  --g2: #e8f4ee;
  --ink: #143027;
  --muted: #4d6a5d;
  --line: #b9d2c6;
  --warn: #9a5b12;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: #f3faf6;
  color: var(--ink);
  font: 16px/1.7 "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
.top {
  display: grid;
  grid-template-columns: 200px 1fr 220px;
  align-items: center;
  background: var(--g0);
  color: #e7f6ee;
  padding: 0 18px;
  min-height: 70px;
}
.brand {
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  font-size: 22px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.menu { display: flex; justify-content: center; gap: 8px; }
.menu a {
  color: #d5eee2;
  text-decoration: none;
  padding: 8px 12px;
  border: 1px solid transparent;
}
.menu a.current { border-color: #7dcea6; background: #164a39; color: #fff; }
.mini-dl {
  justify-self: end;
  background: #f0c14b;
  color: #1d2a12;
  text-decoration: none;
  font-weight: 700;
  padding: 8px 12px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 320px;
}
.split .copy {
  background: var(--g1);
  color: #f4fff8;
  padding: 48px 40px;
}
.split .copy h1 { margin: 0 0 16px; font-size: 30px; line-height: 1.35; }
.split .panel {
  background: #fff;
  padding: 40px 36px;
  border-bottom: 1px solid var(--line);
}
.btn {
  display: inline-block;
  background: #f0c14b;
  color: #1d2a12;
  text-decoration: none;
  font-weight: 800;
  padding: 12px 18px;
}
.btn:hover { filter: brightness(1.05); }
.ghost { color: #e7ffe8; margin-left: 12px; }

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 18px 48px;
}
.span-12 { grid-column: span 12; }
.span-8 { grid-column: span 8; }
.span-6 { grid-column: span 6; }
.span-4 { grid-column: span 4; }
.span-3 { grid-column: span 3; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 16px;
}
.card h2 { margin: 0 0 10px; font-size: 20px; }
.quad {
  display: contents;
}
.step {
  background: #fff;
  border: 1px solid var(--line);
  padding: 16px 16px 14px;
  position: relative;
}
.step .num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--g1);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  margin-bottom: 8px;
}
.step h2 { margin: 0 0 8px; font-size: 18px; }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; }
th { background: var(--g2); }
.faq-item { background: #fff; border-left: 4px solid var(--g1); padding: 12px 14px; margin: 10px 0; }
.faq-item h3 { margin: 0 0 6px; font-size: 16px; }

.foot {
  background: var(--g0);
  color: #d5eee2;
  padding: 24px 18px 34px;
  font-size: 13px;
  line-height: 1.7;
}
.foot a { color: #f0c14b; }
.foot .inner { max-width: 1180px; margin: 0 auto; }
.foot .safe { background: #164a39; padding: 12px; margin-bottom: 12px; }

@media (max-width: 900px) {
  .top { grid-template-columns: 1fr; padding: 12px; gap: 8px; }
  .mini-dl { justify-self: start; }
  .split, .grid { grid-template-columns: 1fr; }
  .span-12, .span-8, .span-6, .span-4, .span-3 { grid-column: auto; }
}