.campaign-subnavigation {
  --campaign-nav-ink: #15171a;
  --campaign-nav-muted: #656970;
  --campaign-nav-line: #d9dadd;
  --campaign-nav-paper: #fff;
  --campaign-nav-signal: #d9ff43;
  box-sizing: border-box;
  color: var(--campaign-nav-ink);
  font-family: Inter, "Noto Sans JP", sans-serif;
}

.campaign-subnavigation *,
.campaign-subnavigation *::before,
.campaign-subnavigation *::after { box-sizing: inherit; }

.campaign-subnavigation__links {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding: 0 0 10px;
  border-bottom: 1px solid var(--campaign-nav-line);
}

.campaign-subnavigation__links a {
  flex: 0 0 auto;
  padding: 10px 14px;
  color: #3f4349;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
}

.campaign-subnavigation__links a:hover { border-color: #b9bcc1; }
.campaign-subnavigation__links a[aria-current="page"] {
  color: #111;
  background: var(--campaign-nav-signal);
  border-color: #c1e72d;
}

.campaign-subnavigation__header { padding: 28px 0 22px; }
.campaign-subnavigation__back {
  display: inline-flex;
  gap: 6px;
  margin-bottom: 22px;
  color: #35393f;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}
.campaign-subnavigation__back:hover { text-decoration: underline; }
.campaign-subnavigation__back[hidden] { display: none; }
.campaign-subnavigation__eyebrow {
  margin: 0 0 8px;
  color: var(--campaign-nav-muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .16em;
}
.campaign-subnavigation__heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}
.campaign-subnavigation__heading h1 { margin: 0; font-size: clamp(24px, 4vw, 38px); line-height: 1.2; }
.campaign-subnavigation__heading p { max-width: 680px; margin: 10px 0 0; color: var(--campaign-nav-muted); font-size: 14px; }
.campaign-subnavigation__steps {
  display: flex;
  flex: 0 0 auto;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: campaign-step;
}
.campaign-subnavigation__steps[hidden] { display: none; }
.campaign-subnavigation__steps li {
  position: relative;
  color: #858990;
  font-size: 12px;
  font-weight: 750;
  counter-increment: campaign-step;
}
.campaign-subnavigation__steps li::before {
  content: counter(campaign-step);
  display: inline-grid;
  place-items: center;
  width: 25px;
  height: 25px;
  margin-right: 7px;
  color: #5d6168;
  border: 1px solid #bfc1c5;
  border-radius: 50%;
}
.campaign-subnavigation__steps li + li::after {
  content: "";
  position: absolute;
  right: calc(100% + 6px);
  top: 12px;
  width: 16px;
  border-top: 1px solid #bfc1c5;
}
.campaign-subnavigation__steps li[aria-current="step"] { color: var(--campaign-nav-ink); }
.campaign-subnavigation__steps li[aria-current="step"]::before {
  color: #111;
  background: var(--campaign-nav-signal);
  border-color: #c1e72d;
}

@media (max-width: 680px) {
  .campaign-subnavigation__links a { padding: 9px 11px; font-size: 12px; }
  .campaign-subnavigation__header { padding-top: 22px; }
  .campaign-subnavigation__heading { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: no-preference) {
  .campaign-subnavigation__links a { transition: color .15s ease, background-color .15s ease, border-color .15s ease; }
}