.rl-flow {
  --line: #164f86;
  --line-w: 2px;
  --head: 7px;
  width: min(680px, 94vw);
  margin: 40px auto;
  padding: 24px 16px 20px;
  font-family: "Noto Sans JP", "Yu Gothic", Meiryo, Arial, sans-serif;
  color: #111;
  box-sizing: border-box;
}
/* 列幅：項目3 / 矢印1 / 項目3 / 矢印1 / 項目3 */
.rl-grid {
  display: grid;
  grid-template-columns: 3fr 1fr 3fr 1fr 3fr;
  align-items: center;
  text-align: center;
}
.rl-item {
  font-size: clamp(14px, 2.6vw, 22px);
  font-weight: 700;
  line-height: 1.3;
  white-space: nowrap;
}
.rl-item span { font-weight: 700; }
.rl-arrow {
  position: relative;
  height: var(--line-w);
  margin: 0 12%;
  background: #111;
}
.rl-arrow::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 50%;
  transform: translateY(-50%);
  border-left: 9px solid #111;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}
/* フィードバック線：Policy中央 ～ Action中央 */
.rl-feedback {
  grid-column: 3 / 6;
  position: relative;
  height: 28px;
  margin: 6px calc(100% * 1.5 / 7) 0;
  border: var(--line-w) solid var(--line);
  border-top: none;
  border-radius: 0 0 4px 4px;
}
/* Policy側の上向き矢印 */
.rl-feedback::before {
  content: "";
  position: absolute;
  left: calc(var(--head) * -1 - var(--line-w) / 2);
  top: -6px;
  border-bottom: 10px solid var(--line);
  border-left: var(--head) solid transparent;
  border-right: var(--head) solid transparent;
}
@media (max-width: 480px) {
  .rl-grid { grid-template-columns: 3fr 0.8fr 3fr 0.8fr 3fr; }
  .rl-item { white-space: normal; }
  .rl-item span { display: block; font-size: 0.85em; }
  .rl-feedback { margin: 6px calc(100% * 1.5 / 6.8) 0; height: 22px; }
}