@charset "UTF-8";

/*-----------------------------------------------------
  .PAGES_HEADまわり
----------------------------------------------------- */
.pages_head { background: linear-gradient(90deg, rgba(1,51,150,1) 0%, rgba(1,198,202,1) 100%); margin-top: calc(var(--fixed-header-height) + 20px); overflow: hidden; display: flex; align-items: center; height: clamp(200px, 40vw, 280px); position: relative; margin-bottom: clamp(50px, 6vw, 75px); }
.pages_head .pages_head_inner { display: flex; flex-direction: column; position: relative; z-index: 1; }
.pages_head .pagettl { font-family: var(--font-Mincho-B1); font-size: clamp(18px, 3vw, 32px); color: #fff; margin-bottom: 15px; }
.pages_head .head_en { position: relative; width: 100vw; overflow: hidden; margin-left: calc(50% - 50vw); }
.pages_head .head_en .scroll_wrap { display: flex; width: max-content; animation: none; will-change: transform; }
.pages_head .head_en .scroll_wrap.is-ready { animation: scroll-left 30s linear infinite; }
.pages_head .head_en img { display: block; width: auto; max-height: 90px;; }
/* 低速端末やiOSでレンダリング安定化 */
@supports (-webkit-touch-callout: none) {
  .pages_head .head_en .scroll_wrap { transform: translateZ(0); }
}

/* ユーザーが「動きを減らす」設定の場合は停止 */
@media (prefers-reduced-motion: reduce) {
  .pages_head .head_en .scroll_wrap, .pages_head .head_en .scroll_wrap.is-ready { animation: none !important; }
}

/* 既存 */
@keyframes scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.topicpath { display: flex; font-size: clamp(11px, 3vw, 14px); margin-top: 20px; /* gap: 0.5em;*/ }
.topicpath li , .topicpath li a { color: #fff; }
.topicpath li + li::before { content: "⚫︎"; display: inline-block; margin: 0 1.2em; font-size: 10px; vertical-align: 1px; }

/*-----------------------------------------------------
  左固定サイドメニュー
----------------------------------------------------- */
.side_nav { position: sticky; top: calc(var(--fixed-header-height) + 30px); align-self: flex-start; width: 260px; }

.side_nav .side_nav_ttl { font-family: var(--font-Mincho-B1); font-weight: 600; font-size: clamp(18px, 5vw, 23px); margin: 0 0 12px; }

.side_nav .side_nav_box { background: #e5f9f9; border-radius: 12px; padding: 20px 24px; box-sizing: border-box; }

.side_nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px; }

.side_nav li { border-bottom: 1px solid #d2e7ee; padding-bottom: 10px; }

.side_nav li:last-child { border-bottom: none; }

.side_nav a { display: flex; align-items: baseline; gap: 8px; font-size: 15px; font-weight: 400; text-decoration: none; color: #123; padding: 6px 8px; border-radius: 8px; transition: color .3s ease, background-color .3s ease, font-weight .3s ease; line-height: 1.2; }

.side_nav a::before { content: "•"; color: #01c6ca; font-size: 22px; line-height: 0; }

.side_nav a:hover { color: var(--blue-color); background: rgba(1, 51, 150, .08); }

.side_nav a.is-active { color: var(--blue-color); background: #d7ebeb; font-weight: 700; }


/*-----------------------------------------------------
  メインコンテンツ部分
----------------------------------------------------- */
.contents_area_flex { display: flex; justify-content: space-between; gap: 40px; max-width: 1300px; width: 90%; margin: 0 auto 80px; padding-bottom: 80px; }
.contents_area { max-width: 1000px; width: 90%; }

section.blk { margin-bottom: clamp(50px, 5vw, 70px); }

h2.c_a { font-family: var(--font-Mincho-B1); font-weight: 600; font-size: clamp(22px, 5vw, 32px); margin-bottom: 40px; text-align: center; }
h3.c_a { position: relative; font-family: var(--font-Mincho-B1); font-weight: 800; font-size: clamp(18px, 5vw, 32px); color: var(--blue-color); padding-bottom: 16px; margin-bottom: 40px; }
h3.c_a::before { content: ""; position: absolute; bottom: 0; left: 0; width: 100%; height:2px; background: #B2B2B2; }
h3.c_a::after { content: ""; position: absolute; bottom: 0; left: 0; width: 50px; height:2px; background: linear-gradient(to right, #01c6ca 0 50%, var(--blue-color) 35% 100%); }

p.txt { font-size: clamp(14px, 3vw, 16px); }
span.bold { font-weight: 700; }

/*-----------------------------------------------------
  内部リンク
----------------------------------------------------- */
.related { max-width: 1440px; width: 90%; margin: 0 auto 80px; padding: 80px 0; border-top: 1px solid #B2B2B2; border-bottom: 1px solid #B2B2B2; box-sizing: border-box; }
.related__title { font-family: var(--font-Mincho-B1, serif); font-weight: 700; font-size: clamp(20px,2.6vw,36px); margin: 0 0 clamp(10px,3vw,40px); color: #1a1a1a; }
.related__grid { display: grid; grid-template-columns: repeat(4,minmax(240px,1fr)); gap: clamp(10px,2vw,20px) clamp(16px,3vw,40px); list-style: none; margin: 0; padding: 0; }
.related__grid li { margin: 0; }
.related__grid a { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: clamp(14px,1.6vw,18px) 0; border-bottom: 1px solid #e5e5e5; color: #222; text-decoration: none; transition: color .25s ease; font-size: clamp(14px, 3vw, 16px); }
.related__label { position: relative; display: inline-block; font-weight: 700; letter-spacing: .02em; }
.related__label::after { content: ""; position: absolute; left: 0; bottom: -12px; width: 0%; height: 2px; background: var(--blue-color); transition: width .25s ease; }
.related__icon { flex: 0 0 auto; width: 44px; height: 44px; border-radius: 50%; border: 1px solid #cfcfcf; color: #7b7b7b; display: grid; place-items: center; transition: background-color .25s ease, color .25s ease, border-color .25s ease, transform .25s ease; }
.related__icon svg { width: 18px; height: 18px; display: block; }
.related__grid a:hover { color: var(--blue-color); }
.related__grid a:hover .related__label::after { width: 100%; }
.related__grid a:hover .related__icon { background-color: var(--blue-color) color: #fff; border-color: var(--blue-color); transform: translateX(2px); }

@media screen and (max-width: 1200px) {
  .related__grid { grid-template-columns: repeat(3,minmax(220px,1fr)); }
}

@media screen and (max-width: 1024px) {
}

@media only screen and (max-width: 980px){
  .pages_head { margin-bottom: clamp(60px, 4vw, 75px); }
  section.blk { margin-bottom: clamp(55px, 4vw, 60px); }
  .side_nav { display: none; }
  .contents_area { max-width: initial; width: 100%; }
  .contents_area_flex { margin-bottom: 50px; padding-bottom: 0; }
  section.blk { margin-bottom: 80px; }
  h3.c_a { margin-bottom: 20px; }
  .related__grid { grid-template-columns: repeat(2,minmax(220px,1fr)); }
}

@media only screen and (max-width: 600px){
  .topicpath { margin-top: 15px; flex-direction: column; gap: 5px; }
  .pages_head { margin-top: calc(var(--fixed-header-height) + 10px); }
  .pages_head .pagettl { margin-bottom: 10px; }
  .pages_head .head_en img { max-height: 50px; }
  section.blk { margin-bottom: 50px; }
  h2.c_a { text-align: left; margin-bottom: 15px; }
  .related { margin: 0 auto 50px; padding: 50px 0; }
  .related__grid { grid-template-columns: 1fr; gap: 0; }
  .related__icon { width: 30px; height: 30px; }
  .related__icon svg { width: 13px; height: 13px; }
}