:root {
  --forest: #1b4332;
  --leaf: #40916c;
  --sand: #f4f1de;
  --card: #fffcf3;
  --ink: #1d2a22;
  --mute: #4d5b52;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Trebuchet MS", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--sand);
  color: var(--ink);
  line-height: 1.72;
  font-size: 16.5px;
}

a { color: var(--forest); }
a:hover { color: var(--leaf); }

.bar {
  background: var(--forest);
  color: #e8f5ee;
}

.bar .inner, .tabs .inner, .lane, .foot .inner {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.bar .inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tabs { background: #d8f3dc; border-bottom: 2px solid var(--leaf); }
.tabs .inner { display: flex; gap: 8px; }
.tabs a {
  padding: 12px 16px;
  text-decoration: none;
  color: var(--forest);
  border-bottom: 3px solid transparent;
}
.tabs a.is-current { border-bottom-color: var(--forest); font-weight: 800; }

.hero-step {
  width: min(1080px, calc(100% - 32px));
  margin: 28px auto 10px;
  background: var(--card);
  border: 1px solid #d7d2b8;
  padding: 28px;
}

.hero-step h1 { font-size: clamp(26px, 3.5vw, 36px); margin: 8px 0 12px; }

.btns { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.btns a {
  text-decoration: none;
  background: var(--leaf);
  color: #fff;
  padding: 11px 16px;
  font-weight: 700;
}
.btns a.soft { background: transparent; color: var(--forest); border: 1px solid var(--forest); }

.four { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; font-size: 14px; }
.four a {
  background: #e8f5ee;
  text-decoration: none;
  padding: 8px;
  text-align: center;
  color: var(--forest);
}

.lane { padding: 12px 0 8px; }

.tick {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  background: var(--card);
  margin: 0 0 14px;
  border-left: 8px solid var(--leaf);
  padding: 18px 20px;
}

.tick .no {
  font-size: 28px;
  font-weight: 800;
  color: var(--leaf);
  line-height: 1;
}

.tick h2 { font-size: 21px; margin-bottom: 8px; }

.trio { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin: 8px 0 20px; }
.trio article { background: var(--card); padding: 16px; border-top: 4px solid var(--forest); }
.trio h2 { font-size: 18px; margin-bottom: 8px; }

table.steps { width: 100%; border-collapse: collapse; background: var(--card); }
table.steps th, table.steps td { border: 1px solid #d7d2b8; padding: 8px 10px; }
table.steps th { background: var(--forest); color: #fff; text-align: left; }

.ask { background: var(--card); padding: 14px 16px; margin-bottom: 10px; }
.ask h3 { font-size: 16px; margin-bottom: 6px; }

.foot { background: #081c15; color: #cfe3d6; padding: 28px 0; font-size: 13px; margin-top: 20px; }
.foot a { color: #95d5b2; }
.foot .ok { color: #d8f3dc; margin-bottom: 8px; }
.foot nav { display: flex; gap: 14px; margin: 8px 0; }

@media (max-width: 800px) {
  .four, .trio { grid-template-columns: 1fr 1fr; }
  .tick { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .four, .trio { grid-template-columns: 1fr; }
}