div#under_box_catch {
    margin-top: 20px;
}

@media screen and (min-width: 768px) {
    .plan-description {
  margin: 0 auto;
    }
}

.plan-description img {
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  max-height: 400px;
  /* 装飾 */
  border-radius: 12px;                 /* 角丸 */
  box-shadow: 0 6px 18px rgba(0,0,0,0.15); /* ドロップシャドウ */
}
@media screen and (max-width: 768px) {
  .plan-description img { max-width: 100%; }
}

  /* アコーディオン（details/summary） */
  .nv-acc{
 /*    margin-top: 12px;
    border-top:1px solid var(--nv-line); */
    padding-top: 12px;
    font-family: sans-serif;
  }
  .nv-acc details{
    border:1px solid var(--nv-line);
    border-radius: 14px;
    background:#fff;
    overflow:hidden;
    margin-top: 10px;
  }
  .nv-acc summary{
    cursor:pointer;
    list-style:none;
    padding: 12px 12px;
    display:flex; align-items:center; justify-content:space-between;
    gap: 3px;
    color: #ffffff;
    font-weight: 600;
    font-size: 13.5px;
    background-color:#2727e3
  }
  .nv-acc summary::-webkit-details-marker{display:none;}
  .nv-acc summary .mini{
    font-weight: 600;
    color:#ffea44;
    font-size: 12px;
  }
  .nv-acc .nv-accBody{
    padding: 14px 12px 12px 12px;
    border-top:1px solid var(--nv-line);
    color: var(--nv-sub);
    font-size: 13px;
    line-height: 1.85;
    background-color: #eaf5ff;
  }
  .nv-acc .nv-kv{
    margin: 10px 0 0 0;
    padding: 0;
    list-style:none;
  }
  .nv-acc .nv-kv li{
    padding: 8px 0;
    border-top:1px dashed var(--nv-line);
  }
  .nv-acc .nv-kv li:first-child{border-top:none; padding-top:0;}
  .nv-acc .k{display:block; font-weight: 600; color: var(--nv-ink); margin-bottom: 2px;font-size: 15px;}
  .nv-acc .v{display:block;    margin-bottom: 10px;}

  /* 注意書き */
  .nv-attn{
    margin-top: 10px;
    padding: 10px 12px;
    border-radius: 14px;
    border:1px solid var(--nv-line);
    background: rgba(239,68,68,.06);
    color: var(--nv-sub);
    font-size: 12.5px;
    line-height: 1.8;
  }
/* 押せる見出しを分かりやすく（details/summary 共通） */
.nv-acc summary,
.nv-optAcc__summary,
.accordion-box summary{
  position: relative;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  padding-right: 46px; /* 右の矢印スペース */
}

/* 右端に「▼」を常に表示（押せる感） */
.nv-acc summary::after,
.nv-optAcc__summary::after,
.accordion-box summary::after{
  content: "▼";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  opacity: .95;
}

/* open時は矢印を回転 */
.nv-acc details[open] > summary::after,
.nv-optAcc[open] > summary::after,
.accordion-box details[open] > summary::after{
  transform: translateY(-50%) rotate(180deg);
}

/* ホバーで「押せる」反応（PC） */
@media (hover:hover){
  .nv-acc summary:hover,
  .nv-optAcc__summary:hover,
  .accordion-box summary:hover{
    filter: brightness(1.1);
  }
}

/* フォーカス（キーボード操作）も分かりやすく */
.nv-acc summary:focus-visible,
.nv-optAcc__summary:focus-visible,
.accordion-box summary:focus-visible{
  outline: 3px solid rgba(255, 234, 68, .9);
  outline-offset: 3px;
  border-radius: 12px;
}

/* 560px以下：アコーディオン競合回避 */
@media (max-width: 560px) {
  .nv-tools-box .nv-acc details > summary,
  .nv-common   .nv-acc details > summary {
    display: flex;
    flex-direction: column-reverse;
    flex-wrap: nowrap;
    align-items: stretch;
  }
    .nv-acc summary, .nv-optAcc__summary, .accordion-box summary {
        display: flex;
        flex-direction: column-reverse;
        flex-wrap: nowrap;
        align-items: stretch;
    }
}

/* スマホはタップしやすく */
@media (max-width: 560px){
  .nv-acc summary,
  .nv-optAcc__summary,
  .accordion-box summary{
    padding-top: 6px;
    padding-bottom: 6px;
  }


}
p.nv-common__lead {
    font-size: 16px;
    line-height: 1.8;
}