:root{
  --blue-main:   #2b8fd6;   /* メインのスカイブルー */
  --blue-deep:   #1c6ea4;   /* 濃い青（グラデ用） */
  --blue-pale:   #eaf5fc;   /* 淡い青（枠背景） */
  --blue-bg:     #f4f9fd;   /* ページ背景 */
  --mint:        #2fb8a6;   /* アクセント（旧オレンジ枠） */
  --mint-pale:   #eefaf7;
  --ink:         #2d3e50;   /* 本文テキスト */
}

body{
    margin: 0;
    padding: 0;
    width: 100%;
    overflow-x: hidden;
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--ink);
    background-color: var(--blue-bg);
}
* {
  font-family: inherit;
}
.container {
    width: 100%;
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    overflow: hidden;
}

/* ---------- 左メニュー：スカイブルーのグラデーション ---------- */
.left {
    width: 250px;
    background: linear-gradient(180deg, #3aa0e0 0%, #1c6ea4 100%);
    color: white;
    padding: 20px;
    flex-shrink: 0;
}

.right {
    flex-grow: 1;
    overflow-y: auto;
    background-color: var(--blue-bg);
    padding: 20px 28px;
}
/*ここまで画面全体の設定*/

/*ここからメニューのcss*/
.site-header {
  background: linear-gradient(90deg, #2b8fd6 0%, #1c6ea4 100%);
  color: white;
  padding: 10px 20px;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(28,110,164,0.25);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 20px;
  font-weight: bold;
}

.menu-toggle {
  background: none;
  border: none;
  color: white;
  font-size: 18px;
  cursor: pointer;
}

/* ドロップダウンメニュー */
.dropdown-menu {
  display: none;
  background-color: #2b81be;
}

.dropdown-menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.dropdown-menu li a {
  display: block;
  color: white;
  padding: 12px 20px;
  text-decoration: none;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.dropdown-menu li a:hover {
  background-color: #3a97d8;
}

/* メニュー表示時 */
.dropdown-menu.open {
  display: block;
}

/* スマホでだけ表示 */
@media screen and (min-width: 769px) {
  .site-header, .dropdown-menu {
    display: none;
  }
}
/*ここまでメニューのcss*/

hr{
    border: none;
    height: 3px;
    background: linear-gradient(90deg, var(--blue-main), #7fd0f0);
    border-radius: 4px;
    margin: 32px 10px;
}

h1{
    margin-left: 2rem;
    font-weight: 900 !important;
    color: var(--blue-deep);
    padding-bottom: 0.4rem;
    border-bottom: 4px solid var(--blue-main);
    display: inline-block;
}

h2{
    margin-left: 2rem;
    font-size: 24px;
    scroll-margin-top: 32px;
    color: var(--ink);
    border-left: 6px solid var(--blue-main);
    padding-left: 0.6rem;
    line-height: 1.5;
}

h3{
    margin-left: 2rem;
    font-size: 22px;
    scroll-margin-top: 32px;
    color: var(--blue-deep);
}

p{
  font-size: 18px;
  line-height: 1.8;
}

.tlink{
  margin: 18px 0;
}
.tlink a{
  color: var(--blue-deep);
}

/*ここからleftのcontentのcss*/
.left ul {
  padding: 0;
}

.left ul li {
  position: relative;
  list-style-type: none!important;
  padding: 0.6em 0.7em;
  margin-bottom: 8px;
  line-height: 1.5;
  background: rgba(255,255,255,0.16);
  vertical-align: middle;
  color: #ffffff;
  border-radius: 999px;                 /* ピル型で軽やかに */
  cursor: pointer;
  transition: all 0.2s ease;
  backdrop-filter: blur(2px);
}

.left ul li:hover {
  background-color: #ffffff;
  color: var(--blue-deep);
  transform: translateX(5px);
  box-shadow: 0 3px 8px rgba(0,0,0,0.15);
}

.left ul li:before{
  display:inline-block;
  vertical-align: -0.1em;
  content:'';
  width: 0.9em;
  height: 0.9em;
  background: #ffffff;
  border: 3px solid #9bd4f5;
  box-sizing: border-box;
  border-radius: 50%;
  margin-right: 8px;
  transition: all 0.2s ease;
}

.left ul li:hover:before{
  background: var(--blue-main);
  border-color: var(--blue-main);
}

.left ul li a{
  color: inherit;
  text-decoration: none;
}

/* 「ホームページに戻る」だけ白基調で区別 */
.left ul li.back-home{
  background-color: #ffffff !important;
  color: var(--blue-deep);
  font-weight: bold;
}
.left ul li.back-home:before{
  background: var(--blue-main);
  border-color: var(--blue-main);
}

/*ここからrightのcontentのcss*/
.main_img{
    width: 70%;
    height: auto;
    margin: 0 auto;
}
.main_img img{
    border-radius: 16px;
    box-shadow: 0 6px 18px rgba(28,110,164,0.15);
}

.waku_ao{
    border: none;
    border-top: 5px solid var(--blue-main);
    border-radius: 16px;
    padding: 24px;
    width: 90%;
    margin: 24px auto;
    background-color: #ffffff;
    box-shadow: 0 4px 14px rgba(28,110,164,0.10);
}

.waku_ao h3{
    margin: 0 0 0.5rem 0;
}

/* 旧オレンジ枠 → 爽やかなミント */
.waku_orange{
    border: none;
    border-top: 5px solid var(--mint);
    border-radius: 16px;
    padding: 24px;
    width: 90%;
    margin: 24px auto;
    background-color: #ffffff;
    box-shadow: 0 4px 14px rgba(47,184,166,0.12);
}

.waku_orange h3{
    margin: 0 0 0.5rem 0;
    color: #1e8a7c;
}

.waku_orange ul{
    padding: 0;
    position: relative;
}

.waku_orange ul li{
    color: var(--ink);
    border-left: solid 8px var(--mint);
    background: var(--mint-pale);
    margin-bottom: 6px;
    line-height: 1.5;
    border-radius: 0 15px 15px 0;
    padding: 0.6em;
    list-style-type: none!important;
}

.waku_tensen{
    border: 2px dashed var(--blue-main);
    border-radius: 12px;
    padding: 24px;
    width: 90%;
    margin: 24px auto;
    background-color: var(--blue-pale);
}
.waku_tensen h3{
    margin: 0 0 0.5rem 0;
}

figure {
    text-align: center;
    margin: 20px auto;
}
figure img{
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(28,110,164,0.12);
}
figcaption {
    font-size: 18px;
    color: var(--ink);
    margin-top: 8px;
}
.narabi_senzo{
    padding: 5%;
}

.narabi_oya {
    display: flex;
    gap: 10%;
    }

.narabi_ko {
    width: 45%;
    height: auto;
    padding: 8px;
    text-align: center;
    }

/* 旧ピンク枠 → 淡い水色の申し込みパネル */
.pink{
    padding: 28px;
    width: 90%;
    margin: 24px auto;
    background: linear-gradient(135deg, #e8f4fd 0%, #dcf1fb 100%);
    border-radius: 16px;
    box-shadow: 0 4px 14px rgba(28,110,164,0.10);
}

.pink h2{
    margin-top: 0;
}

/*ここからボタンデザインのcss*/
*,
*:before,
*:after {
  -webkit-box-sizing: inherit;
  box-sizing: inherit;
}

html {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

.btn_orange{
    text-align: center;
}

.btn,
a.btn,
button.btn {
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  position: relative;
  display: inline-block;
  padding: 1rem 4rem;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  text-align: center;
  vertical-align: middle;
  text-decoration: none;
  letter-spacing: 0.1em;
  color: #ffffff;
  border-radius: 999px;
}

a.btn-radius-solid {
  background: linear-gradient(135deg, #36a5e8 0%, #1c6ea4 100%);
  box-shadow: 0 6px 16px rgba(28,110,164,0.35);
}

a.btn-radius-solid:hover {
  background: linear-gradient(135deg, #4db4f2 0%, #2b81be 100%);
  transform: translateY(-2px);
  box-shadow: 0 9px 20px rgba(28,110,164,0.40);
}

/*ここまでボタンデザインのcss*/


/*ここからテーブルのcss*/
.con_tbl{
    padding: 0 auto 20px auto;
    width: 90%;
    margin: 0 auto 20px auto;
}
.pricing-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 20px;
  font-family: sans-serif;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 3px 10px rgba(28,110,164,0.10);
}

.pricing-table th,
.pricing-table td {
  border: 1px solid #d6e9f5;
  padding: 12px 16px;
  text-align: left;
  font-size: 16px;
  background-color: #ffffff;
}

.pricing-table th {
  background-color: var(--blue-main);
  color: #ffffff;
  font-weight: bold;
  border-color: var(--blue-main);
}

.pricing-table tbody tr:nth-child(even) td{
  background-color: var(--blue-pale);
}

.pricing-table a{
  color: var(--blue-deep);
}

.note {
  font-size: 14px;
  margin-top: 10px;
}

/*ここまでテーブルのcss*/

.narabi_yon {
      display: flex;
      gap: 20px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .card {
      width: 20%;
      padding: 14px;
      background-color: #ffffff;
      text-align: center;
      border-radius: 14px;
      box-shadow: 0 4px 12px rgba(28,110,164,0.12);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: 0 8px 20px rgba(28,110,164,0.18);
    }

    .card h3 {
      font-size: 18px;
      margin-left: 0;
      margin-bottom: 10px;
      color: var(--blue-deep);
    }

    .card img {
      width: 100%;
      height: auto;
      display: block;
      margin-bottom: 10px;
      border-radius: 8px;
    }

    .author {
      text-align: center;
      font-size: 14px;
      margin-top: 10px;
    }

    .solution-link {
      display: block;
      font-size: 14px;
      color: var(--blue-main);
      text-decoration: underline;
      margin-top: 5px;
    }

.requirements {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  padding: 24px;
  margin: 0 20px;
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 3px 10px rgba(28,110,164,0.08);
}

.requirements h4 {
  font-weight: bold;
  margin-top: 20px;
  margin-bottom: 10px;
  color: var(--blue-deep);
}

.requirements ul {
  padding-left: 1.5em;
  margin-bottom: 10px;
}

.requirements li {
  list-style-type: disc;
  margin-bottom: 4px;
}

.requirements code {
  background-color: var(--blue-pale);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
}

/*ここまでrightのcontentのcss*/

.kihon{
  margin-left: 2rem;
}
.kihon a{
  color: var(--blue-deep);
}

/* 取り組み事例：濃紺 → 青グラデーションのパネル */
.torikumi{
  background: linear-gradient(135deg, #2b8fd6 0%, #1c6ea4 100%);
  border-radius: 16px;
  width: 100%;
  margin: 24px auto;
  overflow-x: auto;
  padding: 0 3rem;
  box-sizing: border-box;
  box-shadow: 0 6px 18px rgba(28,110,164,0.25);
}

.shiro{
  color: #ffffff;
  margin-top: 1rem;
  border-left-color: #ffffff;
}

.torikumi-table{
  margin: 3rem auto;
}
.torikumi-table table {
  width: 100%;
  border-collapse: collapse;
}

/* mono-entry デザイン（全国大会）：ブルー統一 */
.mono-entry {
  width: 70%;
  margin: 30px auto;
  background-color: var(--blue-pale);
  padding: 30px;
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  gap: 30px;
  box-shadow: 0 4px 14px rgba(28,110,164,0.12);
}

/* 上部セクション */
.mono-entry-top {
  border-radius: 10px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mono-entry-top-title {
  font-size: 36px;
  font-weight: bold;
  color: var(--blue-deep);
  text-align: center;
  margin-bottom: 10px;
}

.mono-entry-top-subtitle {
  font-size: 16px;
  color: var(--ink);
  text-align: center;
  margin-bottom: 20px;
}

/* 2つのエントリーボックス（横並び） */
.mono-entry-boxes {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-bottom: 0;
}

.mono-entry-box {
  background: linear-gradient(160deg, #3aa0e0 0%, #2b81be 100%);
  border-radius: 12px;
  padding: 20px 30px;
  flex: 1;
  max-width: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  box-shadow: 0 4px 12px rgba(28,110,164,0.25);
}

.entry-box-year {
  font-size: 14px;
  color: #ffffff;
  text-align: center;
}

.entry-box-date {
  font-size: 32px;
  font-weight: bold;
  color: #ffffff;
  text-align: center;
}

.entry-box-label {
  font-size: 18px;
  color: #ffffff;
  text-align: center;
}

/* 矢印とラベル */
.mono-entry-arrows {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 0;
}

.arrow-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  flex: 1;
  max-width: 300px;
}

.arrow-image {
  display: block;
  margin: 0 auto;
  max-width: 63%;
  height: auto;
}

/* 下部セクション：濃い青のグラデーション */
.mono-entry-bottom {
  background: linear-gradient(135deg, #1c6ea4 0%, #123f60 100%);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: 0 4px 12px rgba(18,63,96,0.35);
}

.mono-entry-bottom-title {
  font-size: 28px;
  font-weight: bold;
  color: #ffffff;
  line-height: 1.3;
}

.mono-entry-bottom-subtitle {
  font-size: 32px;
  font-weight: bold;
  color: #ffffff;
  line-height: 1.3;
}

.mono-entry-bottom-date {
  font-size: 18px;
  color: #dcefff;
  margin-top: 10px;
}

/*ここからスマホ表示*/

@media screen and (max-width: 768px) {
  /* ベースリセット */
  html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    font-size: 16px;
    overflow-x: hidden;
  }

  /* 全体レイアウトを縦方向に変更 */
  .container {
    flex-direction: column;
    min-height: 100dvh;
    height: auto;
    overflow: visible;
    margin-top: 56px;
  }

  /* ハンバーガー表示 */
  .hamburger {
    display: block;
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 1001;
    background: var(--blue-deep);
    color: white;
    border: none;
    padding: 10px 14px;
    font-size: 18px;
    cursor: pointer;
  }

  /* 左メニュー */
  .left {
    position: fixed;
    left: -260px;
    top: 0;
    width: 250px;
    height: 100%;
    background: linear-gradient(180deg, #3aa0e0 0%, #1c6ea4 100%);
    color: white;
    padding: 20px;
    transition: left 0.3s ease;
    z-index: 1000;
  }

  .left.open {
    left: 0;
  }

  /* メインエリア調整 */
  .right {
    width: 100%;
    padding: 20px;
    flex-grow: 1;
    min-height: 100vh;
    overflow-y: auto;
  }

  /* narabi_oyaを縦並びに */
  .narabi_oya {
    flex-direction: column;
    gap: 10px;
  }

  .narabi_ko {
    width: 100% !important;
    padding: 0;
  }

  /* カードを1列に */
  .narabi_yon {
    flex-direction: column;
    align-items: center;
  }

  .card {
    width: 90%;
    margin-bottom: 20px;
  }

  /* メイン画像など */
  .main_img img,
  .narabi_ko img,
  .narabi_senzo img {
    width: 100% !important;
    height: auto;
  }

  /* テキスト系の調整 */
  h1, h2, h3 {
    margin-left: 0.5rem;
    font-size: 1.1rem;
  }

  .waku_ao,
  .waku_orange,
  .waku_tensen,
  .pink {
    width: 95%;
    padding: 15px;
  }

  /* テーブル文字サイズ調整 */
  .pricing-table th,
  .pricing-table td {
    font-size: 14px;
    padding: 8px;
  }

  /* ボタンも小さめに */
  .btn,
  a.btn,
  button.btn {
    font-size: 16px;
    padding: 0.8rem 1.5rem;
  }

  .torikumi {
    padding: 1rem;
    overflow-x: auto;
  }

  .torikumi h2.shiro {
    font-size: 1.2rem;
    text-align: center;
    margin: 1rem 0;
  }

  .torikumi-table {
    width: 100%;
    margin: 1rem auto;
  }

  .torikumi-table table {
    width: 100%;
    font-size: 14px;
  }

  .torikumi-table td,
  .torikumi-table th {
    padding: 6px 8px;
    word-break: break-word;
  }

  /* リンクは折り返し許可 */
  .torikumi-table a {
    display: inline-block;
    max-width: 100%;
    overflow-wrap: break-word;
  }

  /* mono-entry スマホ対応 */
  .mono-entry {
    width: 100%;
    padding: 20px 15px;
  }

  .mono-entry-top {
    padding: 20px 15px;
  }

  .mono-entry-top-title {
    font-size: 20px;
  }

  .mono-entry-top-subtitle {
    font-size: 14px;
  }

  .mono-entry-boxes {
    flex-direction: column;
    gap: 15px;
  }

  .mono-entry-box {
    max-width: 100%;
    padding: 15px 20px;
  }

  .entry-box-date {
    font-size: 24px;
  }

  .mono-entry-arrows {
    flex-direction: column;
    gap: 15px;
  }

  .arrow-container {
    max-width: 100%;
  }

  .mono-entry-bottom {
    padding: 20px 15px;
  }

  .mono-entry-bottom-title {
    font-size: 20px;
  }

  .mono-entry-bottom-subtitle {
    font-size: 24px;
  }

  .mono-entry-bottom-date {
    font-size: 16px;
  }

}

/*ここまでスマホ表示*/