html {
  scroll-behavior: smooth;
}

body {
    margin: 0;
    background-color: #e6f3ff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
    overflow-x: hidden;
    width: 100%;
    box-sizing: border-box;
  }

  *, *::before, *::after {
    box-sizing: border-box;
  }

  .dot {
    position: fixed;
    width: 100px;
    height: 100px;
    background-color: rgba(0, 119, 204, 0.1);
    border-radius: 50%;
    z-index: -1;
    transition: transform 0.1s linear;
  }

  
  
  header {
    background-color: #0077cc;
    color: white;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 60px;
    position: relative;
  }
  
  .logo {
    font-weight: bold;
    font-size: 1.5rem;
    color: #ffe600;
    display: flex;
    align-items: center;
    gap: 15px;
  }

  .logo img {
    height: 40px;
    width: auto;
    vertical-align: middle;
    max-width: 250px;
  }

  .logo-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .logo-title {
    font-size: 1.4rem;
    font-weight: bold;
    color: #ffffff;
    line-height: 1.2;
  }

  .logo-subtitle {
    font-size: 0.9rem;
    color: #ffffff;
    line-height: 1.1;
    margin-top: 2px;
  }

  /* ハンバーガーメニューボタン（PC版では非表示） */
  .hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
  }

  .hamburger span {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
  }

  /* ハンバーガーメニューのアニメーション */
  .hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-6px, 6px);
  }

  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-6px, -6px);
  }
  
  nav ul {
    list-style: none;
    display: flex;
    gap: 12px;
    margin: 0;
    padding: 0;
  }
  
  nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    padding: 8px 16px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
  }
  
  nav a:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  }
  
  .notice-box {
    background: #ffffff;
    border-radius: 10px;
    margin: 30px auto;
    padding: 20px;
    width: 90%;
    max-width: 800px;
    box-shadow: 0 4px 10px rgba(0, 119, 204, 0.2);
  }
  
  .notice-box h2 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    border-bottom: 2px solid #0077cc;
    padding-bottom: 5px;
  }
  
  .accordion {
    list-style: none;
    padding: 0;
    margin: 0;
  }
  
  .accordion-header {
    background-color: #e0f0ff;
    border: none;
    outline: none;
    width: 100%;
    text-align: left;
    padding: 15px;
    font-size: 1rem;
    cursor: pointer;
    border-bottom: 1px solid #ccc;
    transition: background 0.3s;
    position: relative;
    border-radius: 8px;
    margin-bottom: 2px;
    font-weight: 600;
    color: #0077cc;
    border: 2px solid #d0eaff;
    box-shadow: 0 2px 4px rgba(0, 119, 204, 0.1);
  }
  
  .accordion-header::after {
    content: "▼";
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    transition: transform 0.3s ease;
    color: #0077cc;
    font-size: 0.8rem;
  }
  
  .accordion-header.active::after {
    transform: translateY(-50%) rotate(180deg);
  }
  
  .accordion-header:hover {
    background-color: #d0eaff;
    border-color: #0077cc;
    box-shadow: 0 4px 8px rgba(0, 119, 204, 0.15);
  }
  
  .accordion-header.active {
    background-color: #0077cc;
    color: white;
    border-color: #0077cc;
  }
  
  .accordion-header.active::after {
    color: white;
  }
  
  .accordion-body {
    display: none;
    padding: 10px 15px;
    background-color: #f9f9f9;
    font-size: 0.95rem;
    border-radius: 0 0 8px 8px;
    border: 2px solid #d0eaff;
    border-top: none;
    margin-bottom: 8px;
    box-shadow: 0 2px 4px rgba(0, 119, 204, 0.05);
  }

  .show-older-button {
    background-color: #0077cc;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    margin-top: 15px;
    transition: background-color 0.3s ease;
  }

  .show-older-button:hover {
    background-color: #005fa3;
  }

  #older-news-container {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid #e9ecef;
  }

  #older-news-container h3 {
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 15px;
  }
  
  .title-section {
    text-align: center;
    margin: 40px auto;
    max-width: 800px;
    background-color: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 119, 204, 0.1);
  }
  
  .title-section h1 {
    font-size: 2.2rem;
    color: #0077cc;
    margin-bottom: 20px;
  }
  
  .title-section p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #333;
    text-align: left;
    margin-bottom: 10px;
  }

  /* 申し込みボタンセクション */
  .application-buttons {
    margin: 40px auto;
    max-width: 800px;
    padding: 20px;
  }

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

  .large-button {
    display: inline-block;
    padding: 20px 40px;
    font-size: 1.2rem;
    font-weight: bold;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.3s ease;
    min-width: 300px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 2px solid;
  }

  .external-button {
    background-color: #ff6b35;
    color: white;
    border-color: #ff6b35;
  }

  .external-button:hover {
    background-color: #e55a2b;
    border-color: #e55a2b;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(229, 90, 43, 0.3);
  }

  .internal-button {
    background-color: #0077cc;
    color: white;
    border-color: #0077cc;
  }

  .internal-button:hover {
    background-color: #0066b3;
    border-color: #0066b3;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 102, 179, 0.3);
  }
  .info-section {
    background-color: #ffffff;
    margin: 40px auto;
    padding: 25px;
    max-width: 800px;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 119, 204, 0.1);
  }
  
  .info-section h2 {
    font-size: 1.5rem;
    color: #0077cc;
    margin-bottom: 15px;
  }
  
  .info-section h3 {
    font-size: 1.3rem;
    color: #0077cc;
    margin-top: 25px;
    margin-bottom: 15px;
  }
  
  .info-section p {
    font-size: 1rem;
    line-height: 1.7;
    color: #333;
    margin: 0;
  }
  /* トグル内のスケジュールブロック */
.schedule-block {
    margin-top: 10px;
    font-size: 0.95rem;
  }
  
  .schedule-row {
    display: flex;
    padding: 15px;
    margin-bottom: 5px;
    border-radius: 5px;
    color: #333;
  }
  
  .schedule-row .date {
    width: 120px;
    font-weight: bold;
  }
  
  .schedule-row .content {
    flex: 1;
  }
  
  .schedule-row .detail {
    margin-top: 5px;
    font-size: 0.9rem;
    color: #666;
  }
  
  .schedule-row a {
    color: #0077cc;
    text-decoration: underline;
    font-size: 0.9rem;
  }
  
  /* カラーバリエーション */
  .blue {
    background-color: #e8f2ff;
  }
  
  .gray {
    background-color: #f0f0f0;
  }
  
  .orange {
    background-color: #fff5f0;
  }
  
  .light-blue {
    background-color: #f8fafe;
    color: #333;
  }
  
  .light-blue .detail,
  .light-blue a {
    color: #333;
  }
  
  /* フッタースタイル */
  footer {
    background-color: #0077cc;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
  }
  
  .footer-content p {
    margin: 0;
    font-size: 0.9rem;
    color: #e0f0ff;
  }
  
  .fee-table-container {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
  }
  
  .fee-table {
    border-collapse: collapse;
    width: 100%;
    max-width: 400px;
    background-color: #ffffff;
    box-shadow: 0 0 6px rgba(0,0,0,0.1);
  }
  
  .fee-table th {
    background-color: #003366;
    color: white;
    font-weight: bold;
    padding: 12px;
    text-align: center;
  }
  
  .fee-table td {
    padding: 10px;
    text-align: center;
    border-top: 1px solid #ccc;
    font-weight: bold;
    background-color: #f9f9f9;
  }
  
  /* 幅いっぱいに表示する表 */
  .fee-table.full-width {
    width: 100%;
    max-width: none;
    margin: 20px auto;
  }
  
  .info-section .fee-table {
    margin: 20px auto;
  }
  
  .fee-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.9rem;
    color: #003366;
  }
  
  .fee-arrow .arrow {
    width: 8px;
    height: 100px;
    background: linear-gradient(to top, #ffff00, #ffcc00);
    position: relative;
    margin: 4px 0;
  }
  
  .fee-arrow .arrow::after {
    content: "";
    position: absolute;
    top: -8px;
    left: -6px;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 12px solid #ffcc00;
  }
  
  
  
/* スマートフォン対応 */
@media (max-width: 768px) {
  header {
    flex-direction: row;
    text-align: left;
    padding: 10px 15px;
    min-height: auto;
  }
  
  .logo {
    margin-bottom: 0;
    font-size: 1.2rem;
    gap: 0;
    justify-content: flex-start;
  }

  .logo img {
    height: 30px;
    width: auto;
    max-width: 200px;
    display: none;
  }

  .logo-text {
    align-items: flex-start;
  }

  .logo-title {
    font-size: 1.2rem;
  }

  .logo-subtitle {
    font-size: 0.8rem;
  }

  /* ハンバーガーメニューボタンを表示 */
  .hamburger {
    display: flex;
  }

  /* ナビゲーションメニューを隠す */
  nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #0077cc;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  }

  /* メニューが開いている時のスタイル */
  nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  nav ul {
    flex-direction: column;
    gap: 0;
    width: 100%;
    padding: 10px 0;
  }

  nav li {
    width: 100%;
  }

  nav a {
    display: block;
    padding: 15px 20px;
    background-color: transparent;
    border-radius: 0;
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
  }

  nav a:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: none;
    box-shadow: none;
  }
  
  .notice-box,
  .title-section,
  .info-section {
    width: 100%;
    max-width: 100%;
    margin: 20px auto;
    padding: 15px;
    box-sizing: border-box;
  }
  
  .title-section h1 {
    font-size: 1.8rem;
  }
  
  .title-section p {
    font-size: 0.95rem;
    line-height: 1.6;
  }
  
  .info-section h2 {
    font-size: 1.3rem;
  }
  
  .info-section h3 {
    font-size: 1.1rem;
    margin-top: 20px;
    margin-bottom: 12px;
  }
  
  .info-section p {
    font-size: 0.9rem;
    line-height: 1.6;
  }
  
  .accordion-header {
    font-size: 0.9rem;
    padding: 12px;
    min-height: 44px; /* タッチフレンドリーなサイズ */
    border-radius: 6px;
    margin-bottom: 2px;
  }
  
  .accordion-header::after {
    right: 12px;
    font-size: 0.7rem;
  }
  
  .accordion-body {
    padding: 10px 12px;
    font-size: 0.85rem;
    border-radius: 0 0 6px 6px;
    margin-bottom: 6px;
  }
  
  /* スケジュール表示のモバイル調整 */
  .schedule-row {
    flex-direction: column;
    padding: 12px;
    margin-bottom: 8px;
  }
  
  .schedule-row .date {
    width: 100%;
    margin-bottom: 8px;
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 5px;
  }
  
  .schedule-row .content {
    font-size: 0.85rem;
  }
  
  .schedule-row .detail {
    font-size: 0.8rem;
    margin-top: 8px;
    line-height: 1.5;
  }
  
  .schedule-row a {
    font-size: 0.8rem;
    display: inline-block;
    margin-right: 10px;
    margin-bottom: 5px;
  }
  
  /* 背景サイズの調整 */
  body {
    background-size: 150px 150px;
  }
  
  /* モバイル用フッタースタイル */
  footer {
    padding: 15px 10px;
    margin-top: 30px;
  }
  
  .footer-content p {
    font-size: 0.8rem;
  }
  
  /* モバイル用表スタイル */
  .fee-table.full-width {
    width: 100%;
    max-width: none;
    margin: 15px auto;
    font-size: 0.9rem;
  }
  
  .fee-table th {
    padding: 10px 8px;
    font-size: 0.9rem;
  }
  
  .fee-table td {
    padding: 8px;
    font-size: 0.85rem;
  }

  /* レスポンシブ対応: 申し込みボタン */
  .application-buttons {
    padding: 20px 10px;
    margin: 20px auto;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .button-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    width: 100%;
    max-width: 100%;
  }

  .large-button {
    width: 100%;
    max-width: 280px;
    min-width: 0;
    padding: 18px 20px;
    font-size: 1.1rem;
    margin: 0;
    box-sizing: border-box;
    text-align: center;
  }

  body {
    padding: 0;
    max-width: 100%;
    overflow-x: hidden;
  }

  .show-older-button {
    width: 100%;
    max-width: 280px;
    margin: 15px auto;
    display: block;
  }

  #older-news-container {
    margin-top: 15px;
    padding-top: 15px;
  }

  #older-news-container h3 {
    font-size: 1rem;
    margin-bottom: 10px;
  }
}
  
/* --- taisaku_v3.html から移動 --- */
main { max-width: 900px; margin: 2em auto; background: #fff; border-radius: 12px; box-shadow: 0 4px 16px rgba(0,0,0,0.07); padding: 2em; }
.tab-buttons { display: flex; gap: 8px; margin-bottom: 1em; }
.tab-button { padding: 0.7em 1.5em; border: none; border-radius: 6px 6px 0 0; background: #e0e0e0; cursor: pointer; font-weight: bold; transition: background 0.2s; }
.tab-button.active, .tab-button:focus { background: #2196F3; color: #fff; outline: none; }
.tab-content { display: none; padding: 1em; background: #f9fbe7; border-radius: 0 0 6px 6px; margin-bottom: 1em; }
.tab-content.active { display: block; }
.accordion-header { background: #e3f2fd; border: none; outline: none; width: 100%; text-align: left; padding: 1em; font-size: 1.1em; cursor: pointer; border-radius: 6px; margin-bottom: 4px; transition: background 0.2s; }
.accordion-header.active, .accordion-header:hover { background: #bbdefb; }
.accordion-body { display: none; padding: 1em; background: #f1f8e9; border-radius: 6px; margin-bottom: 8px; }
.notice { background: #fff3e0; color: #e65100; padding: 1em; border-radius: 6px; margin-bottom: 1em; }
.faq { margin-top: 2em; }
.faq-item { margin-bottom: 1em; }
.faq-q { font-weight: bold; color: #388e3c; }
.faq-a { margin-left: 1em; color: #333; }
.sample-table { width: 100%; border-collapse: collapse; margin-bottom: 1em; }
.sample-table th, .sample-table td { border: 1px solid #bdbdbd; padding: 0.7em; text-align: left; }
.sample-table th { background: #e3f2fd; }
.sample-form { margin-top: 1em; }
.sample-form label { display: block; margin-bottom: 0.5em; }
.sample-form input, .sample-form textarea { width: 100%; padding: 0.5em; margin-bottom: 1em; border-radius: 4px; border: 1px solid #bdbdbd; }
.sample-form button { background: #2196F3; color: #fff; border: none; padding: 0.7em 2em; border-radius: 6px; cursor: pointer; }
.notification { display: none; position: fixed; top: 20px; right: 20px; background: #43a047; color: #fff; padding: 1em 2em; border-radius: 8px; z-index: 2000; box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
#mobile-block { display: none; position: fixed; z-index: 3000; top: 0; left: 0; width: 100vw; height: 100vh; background: #fff; color: #d32f2f; align-items: center; justify-content: center; flex-direction: column; font-size: 1.5em; text-align: center; }
#mobile-block img { width: 120px; margin-bottom: 1em; }
@media (max-width: 900px) {
  #main-content, header, footer { display: none !important; }
  #mobile-block { display: flex !important; }
}
.tab-content.locked::before {
  content: 'ログイン後に閲覧できます';
  display: block;
  color: #d32f2f;
  background: #fff3e0;
  border-radius: 6px;
  padding: 1em;
  margin-bottom: 1em;
  text-align: center;
}
.tab-content.locked > *:not(.locked-message) { display: none !important; }
.login-block {
  display: none;
  position: fixed;
  z-index: 4000;
  top: 0; left: 0; width: 100vw; height: 100vh;
  background: #fff; color: #222;
  align-items: center; justify-content: center; flex-direction: column;
  font-size: 1.3em; text-align: center;
}
.login-block .login-box {
  background: #f5f5f5; border-radius: 12px; box-shadow: 0 4px 16px rgba(0,0,0,0.07);
  padding: 2em 2.5em; min-width: 320px; max-width: 90vw;
  display: flex; flex-direction: column; align-items: center;
}
.login-block input[type="password"] {
  width: 100%; font-size: 1.1em; margin: 1em 0 0.5em 0; padding: 0.5em; border-radius: 6px; border: 1px solid #bdbdbd;
}
.login-block button {
  background: #2196F3; color: #fff; border: none; padding: 0.7em 2em; border-radius: 6px; cursor: pointer; font-size: 1em;
}
.login-block .error { color: #d32f2f; margin-top: 0.5em; min-height: 1.5em; }

/* ログイン説明文用スタイル */
.login-description {
  background: #f1f8e9;
  color: #388e3c;
  font-size: 0.92em;
  border-radius: 8px;
  padding: 1em 1.2em;
  margin-bottom: 1em;
  text-align: center;
  box-shadow: 0 2px 8px rgba(56, 142, 60, 0.07);
  line-height: 1.7;
  word-break: break-word;
  overflow-wrap: break-word;
}