.singleSec{
    padding: calc(var(--space-50)*2) calc(var(--space-50)*3);
    line-height: 2.2;
}

.singleSec .headLine{
    display: block;
    font-size: calc(var(--font-size-h1)/1.3);
    padding-top: var(--space-30);
    padding-bottom: var(--space-50);
    text-align: center;
}

.singleSec .headLine span{
    display: block;
    font-size: calc(var(--font-size-h2)/1.5);
    padding-top: var(--space-30);
    line-height: var(--space-30);
}
.singleSec .headLine span::before{
    content: "";
    display: block;
    height: 3px;
    width: 30%;
    margin:0 auto;
    background:var(--color-yellow);
    margin-bottom: var(--space-20);
}
.singleContent{
  line-height: 1.5;
}


/* ========================================================== */
/* ==============  2023タプレット 1025px   ==================== */
/* ========================================================== */
@media screen and (max-width:1025px){
    .singleSec{
        padding: calc(var(--space-50)*1) calc(var(--space-30)*1) calc(var(--space-50)*2);
        line-height: 2;
    }
 }
 
 
 /* ========================================================== */
 /* ==============  2023スマホ     600px   ==================== */
 /* ========================================================== */
 @media screen and (max-width:600px){
    .singleSec{
        padding: calc(var(--space-50)*1) calc(var(--space-30)*1) calc(var(--space-50)*2);
    }
    .singleSec .headLine{
        font-size: calc(var(--font-size-h1)/1.5);
    }
    .singleSec .headLine span{
        font-size: calc(var(--font-size-h2)/1.8);
        padding-top: var(--space-30);
        line-height: var(--space-30);
    }
    .singleNav__backLink {
    font-size: 12px;
}
 
 }
 

/* =========================
   Single Nav (NEWS)
========================= */
.singleNav{
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid rgba(0,0,0,.12);

  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: center;
}

.singleNav__prev{ text-align: left; }
.singleNav__back{ text-align: center; }
.singleNav__next{ text-align: right; }

/* prev/next link */
.singleNav__prev a,
.singleNav__next a{
  display: inline-flex;
  align-items: center;
  gap: 8px;

  text-decoration: none;
  color: rgba(0,0,0,.82);
  font-weight: 800;
  letter-spacing: .02em;

  padding: 10px 12px;
  border-radius: 12px;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}

.singleNav__prev a:hover,
.singleNav__next a:hover{
  background: rgba(11,42,122,.06);
  color: #0b2a7a;
}

/* back button */
.singleNav__backLink{
  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid rgba(11,42,122,.55);

  text-decoration: none;
  color: #0b2a7a;
  font-weight: 900;
  letter-spacing: .04em;

  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.singleNav__backLink:hover{
  background: #0b2a7a;
  border-color: #0b2a7a;
  color: #fff;
}

/* link not exist (when no prev/next) */
.singleNav__prev:empty,
.singleNav__next:empty{
  min-height: 44px; /* レイアウト維持 */
}

/* =========================
   Mobile
========================= */
@media (max-width: 768px){
  .singleNav{
    grid-template-columns: 1fr;
    gap: 12px;
    text-align: center;
  }
  .singleNav__prev,
  .singleNav__next{
    text-align: center;
  }
  .singleNav__prev a,
  .singleNav__next a{
    width: 100%;
    justify-content: center;
  }
}