@charset "UTF-8";

/* Webフォント・アイコンフォント */
@import url("https://fonts.googleapis.com/css2?family=BIZ+UDPGothic:wght@400;700&family=Libre+Baskerville:wght@400;700&display=swap");
@import url("https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.2/css/all.min.css");

/* =========================================================
   FESTINA LENTE
   共通スタイルシート

   ・コンテンツ最大幅：1200px
   ・SPブレークポイント：900px
   ・テーマ色は body[data-theme] で切り替え
   ・SP用CSSも、各コンポーネントの直後に記載
   ========================================================= */


/* =========================================================
   1. カラーパレット・共通変数
   ========================================================= */

:root {
  /* レイアウト */
  --container-width: 1200px;
  --container-padding: clamp(20px, 4vw, 48px);
  --header-height: 118px;
  --radius-small: 3px;
  --radius-medium: 6px;

  /* 基本色：トップ・Diary・Contact */
  --color-main: #58765f;
  --color-main-dark: #3f5946;
  --color-main-light: #e8efe9;
  --color-main-pale: #f6f8f6;
  --color-main-rgb: 88, 118, 95;
  --color-accent: #8a6947;

  /* 共通色 */
  --color-text: #333333;
  --color-text-sub: #666666;
  --color-text-light: #777777;
  --color-background: #ffffff;
  --color-background-sub: #f7f7f5;
  --color-border: #d9ddd9;
  --color-border-dark: #bcc4bd;
  --color-white: #ffffff;
  --color-black: #111111;

  /* 影は控えめに使用 */
  --shadow-soft: 0 6px 18px rgba(30, 30, 30, 0.07);

  /* アニメーション */
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s ease;

  /*
    正方形ロゴ。
    ロゴ画像完成後、none を url("../images/logo.png") に変更し、
    header.html の .site-logo 部分のコメントを外してください。
  */
  --site-logo-image: none;

  /*
    ヘッダーのサイト名画像。
    CSSファイルから見た相対パスで指定します。
  */
  --site-title-image: url("../images/site-title_green.svg");
}


/* トップページ・Diary・Contact：グリーン系 */
body[data-theme="green"] {
  --color-main: #58765f;
  --color-main-dark: #3f5946;
  --color-main-light: #e8efe9;
  --color-main-pale: #f6f8f6;
  --color-main-rgb: 88, 118, 95;
  --color-accent: #8a6947;
  --site-title-image: url("../images/site-title_green.svg");
}


/* Music Library：エンジ系 */
body[data-theme="music"] {
  --color-main: #8b4652;
  --color-main-dark: #67333d;
  --color-main-light: #f3e7e9;
  --color-main-pale: #faf6f7;
  --color-main-rgb: 139, 70, 82;
  --color-accent: #927149;
  --site-title-image: url("../images/site-title_musiclibrary.svg");
}


/* Programming：青系 */
body[data-theme="programming"] {
  --color-main: #426f91;
  --color-main-dark: #2f536e;
  --color-main-light: #e6eef4;
  --color-main-pale: #f5f8fa;
  --color-main-rgb: 66, 111, 145;
  --color-accent: #667f4d;
  --site-title-image: url("../images/site-title_programming.svg");
}


/* Aikido：青系 */
body[data-theme="aikido"] {
  --color-main: #2787b4;
  --color-main-dark: #1b6487;
  --color-main-light: #e3f1f7;
  --color-main-pale: #f4fafc;
  --color-main-rgb: 39, 135, 180;
  --color-accent: #71994d;
  --site-title-image: url("../images/site-title_aikido.svg");
}


/* =========================================================
   2. リセット・基本設定
   ========================================================= */

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

html {
  min-height: 100%;
  scroll-behavior: smooth;

  /* ページごとのスクロールバー有無による横ずれを防止 */
  scrollbar-gutter: stable;
  overflow-y: scroll;
}

body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  color: var(--color-text);
  background: var(--color-background);
  font-family:
    "BIZ UDPGothic",
    "Yu Gothic",
    "YuGothic",
    "Hiragino Kaku Gothic ProN",
    "Hiragino Sans",
    Meiryo,
    sans-serif;
  font-size: 16px;
  line-height: 1.85;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

body.is-nav-open {
  overflow: hidden;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

img {
  vertical-align: middle;
}

figure {
  margin: 0;
}

a {
  color: var(--color-main-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

ul,
ol {
  margin-top: 0;
}

p {
  margin: 0 0 1.4em;
}

p:last-child {
  margin-bottom: 0;
}

h1,
h2,
h3,
h4 {
  margin-top: 0;
  color: var(--color-text);
  line-height: 1.45;
  font-weight: 600;
}

h1 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

h2 {
  font-size: clamp(1.45rem, 2.5vw, 1.85rem);
}

h3 {
  font-size: clamp(1.18rem, 2vw, 1.4rem);
}

h4 {
  font-size: 1.08rem;
}


/* キーボード操作時のフォーカス */
:focus-visible {
  outline: 3px solid rgba(var(--color-main-rgb), 0.4);
  outline-offset: 3px;
}


/* 本文へ移動 */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 10000;
  padding: 8px 14px;
  color: var(--color-white);
  background: var(--color-black);
  transform: translateY(-160%);
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
}


/* =========================================================
   3. 共通レイアウト
   ========================================================= */

.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: min(
    calc(100% - (var(--container-padding) * 2)),
    var(--container-width)
  );
  margin-inline: auto;
}

.main-content {
  flex: 1 0 auto;
  padding: 0 0 clamp(72px, 9vw, 120px);
}

.include-area:empty {
  display: none;
}

.include-error {
  width: min(
    calc(100% - (var(--container-padding) * 2)),
    var(--container-width)
  );
  margin: 12px auto;
  padding: 12px 16px;
  border: 1px solid #c74848;
  color: #8b2424;
  background: #fff3f3;
  font-size: 0.9rem;
}


/* 下層ページ：サイドメニュー＋コンテンツ */
.content-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: start;
}

.content-main {
  min-width: 0;
}

@media (max-width: 900px) {
  .content-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }
}


/* =========================================================
   4. ヘッダー
   header.htmlで想定する主なクラス：
   .site-header / .header-inner / .site-name / .site-name__image
   .header-information / .nav-toggle
   ========================================================= */

.site-header {
  position: relative;
  z-index: auto;
  min-height: var(--header-height);
  border-top: 5px solid var(--color-main);
  background: var(--color-background);
}

.header-inner {
  display: flex;
  min-height: calc(var(--header-height) - 5px);
  align-items: center;
  justify-content: flex-start;
  gap: 24px;
  padding-block: 20px;
}

.site-brand {
  display: flex;
  flex: 0 1 auto;
  min-width: 0;
  align-items: center;
  gap: 20px;
}


/*
  正方形ロゴ。
  現在はheader.html側をコメントアウトしています。
*/
.site-logo {
  display: block;
  flex: 0 0 72px;
  width: 72px;
  height: 72px;
  text-decoration: none;
}

.site-logo__image {
  display: block;
  width: 100%;
  height: 100%;
  background-image: var(--site-logo-image);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}


.site-name {
  display: block;
  flex: 0 1 480px;
  width: min(48vw, 480px);
  text-decoration: none;
}

.site-name__image {
  display: block;
  width: 100%;
  height: 72px;
  background-image: var(--site-title-image);
  background-repeat: no-repeat;
  background-position: left center;
  background-size: contain;
}


@media (max-width: 900px) {
  :root {
    --header-height: 82px;
  }

  .site-header {
    border-top-width: 4px;
  }

  .header-inner {
    min-height: calc(var(--header-height) - 4px);
    gap: 16px;
    padding-block: 10px;
  }

  .site-brand {
    flex: 1 1 auto;
    width: calc(100% - 64px);
    max-width: calc(100% - 64px);
    min-width: 0;
    gap: 12px;
  }
  
  .site-name {
    display: block;
    flex: 1 1 auto;
    width: 100%;
    max-width: 360px;
    min-width: 0;
  }
  
  .site-name__image {
    display: block;
    width: 100%;
    height: 54px;
    background-image: var(--site-title-image);
    background-repeat: no-repeat;
    background-position: left center;
    background-size: contain;
  }


  .site-name__image {
    height: 54px;
  }

}


/* =========================================================
   5. メインメニュー・ハンバーガーメニュー
   PC・SPとも同一のメニューを使用
   ========================================================= */

.global-nav {
  position: relative;
  z-index: 120;
  width: 100%;
  background: var(--color-main);
}

.global-nav__inner {
  width: min(
    calc(100% - (var(--container-padding) * 2)),
    var(--container-width)
  );
  margin-inline: auto;
}

.global-nav__list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}

.global-nav__item {
  display: flex;
  flex: 1 1 0;
  min-width: 0;
}

.global-nav__link {
  position: relative;
  display: grid;
  width: 100%;
  min-height: 56px;
  place-items: center;
  padding: 10px 14px;
  border-right: 1px solid rgba(255, 255, 255, 0.24);
  color: var(--color-white);
  font-size: 0.98rem;
  letter-spacing: 0.03em;
  text-align: center;
  text-decoration: none;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.global-nav__item:last-child .global-nav__link {
  border-right: 0;
}

.global-nav__link:hover,
.global-nav__link:focus-visible {
  color: var(--color-white);
  background: var(--color-main-dark);
}


/*
  JSを使わず、bodyのdata-sectionと
  メニュー項目のdata-navを照合してアクティブ表示
*/
body[data-section="home"]
  .global-nav__item[data-nav="home"]
  .global-nav__link,
body[data-section="musiclibrary"]
  .global-nav__item[data-nav="musiclibrary"]
  .global-nav__link,
body[data-section="programming"]
  .global-nav__item[data-nav="programming"]
  .global-nav__link,
body[data-section="diary"]
  .global-nav__item[data-nav="diary"]
  .global-nav__link,
body[data-section="contact"]
  .global-nav__item[data-nav="contact"]
  .global-nav__link {
  background: var(--color-main-dark);
}


/* ハンバーガーボタン */
.nav-toggle {
  display: none;
  position: relative;
  z-index: 300;
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid var(--color-main);
  border-radius: 50%;
  background: var(--color-background);
  cursor: pointer;
}

.nav-toggle__line {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-main);
  transform: translate(-50%, -50%);
  transition: background-color var(--transition-fast);
}

.nav-toggle__line::before,
.nav-toggle__line::after {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: var(--color-main);
  transform-origin: center;
  transition:
    top var(--transition-base),
    transform var(--transition-base),
    background-color var(--transition-fast);
  content: "";
}

.nav-toggle__line::before {
  top: -7px;
}

.nav-toggle__line::after {
  top: 7px;
}

body.is-nav-open .nav-toggle__line {
  background: transparent;
}

body.is-nav-open .nav-toggle__line::before {
  top: 0;
  background: var(--color-white);
  transform: rotate(45deg);
}

body.is-nav-open .nav-toggle__line::after {
  top: 0;
  background: var(--color-white);
  transform: rotate(-45deg);
}


/* ドロワー背面 */
.nav-backdrop {
  visibility: hidden;
  position: fixed;
  z-index: 110;
  inset: 0;
  height: 100dvh;
  background: rgba(0, 0, 0, 0.62);
  opacity: 0;
  transition:
    visibility var(--transition-base),
    opacity var(--transition-base);
}

body.is-nav-open .nav-backdrop {
  visibility: visible;
  opacity: 1;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
    position: fixed;
    z-index: 310;
    top: 18px;
    right: max(18px, env(safe-area-inset-right));
    margin-left: auto;
  }

  body.is-nav-open .nav-toggle {
    border-color: rgba(255, 255, 255, 0.7);
    background: var(--color-main-dark);
  }

  .global-nav {
    visibility: hidden;
    position: fixed;
    z-index: 200;
    top: 0;
    right: 0;
    width: min(84vw, 380px);
    height: 100dvh;
    overflow-y: auto;
    background: var(--color-main-dark);
    opacity: 0;
    transform: translateX(100%);
    transition:
      visibility 0.5s ease,
      opacity 0.5s ease,
      transform 0.5s ease;
    overscroll-behavior: contain;
  }

  body.is-nav-open .global-nav {
    visibility: visible;
    opacity: 1;
    transform: translateX(0);
  }

  .global-nav__inner {
    width: 100%;
    margin: 0;
    padding: 96px 24px 48px;
  }

  .global-nav__list {
    display: block;
  }

  .global-nav__item {
    display: block;
  }

  .global-nav__link {
    display: flex;
    min-height: 58px;
    align-items: center;
    justify-content: space-between;
    padding: 14px 12px;
    border: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.28);
    font-size: 1rem;
    text-align: left;
  }

  .global-nav__item:first-child .global-nav__link {
    border-top: 1px solid rgba(255, 255, 255, 0.28);
  }

  .global-nav__item:last-child .global-nav__link {
    border-right: 0;
  }

  .global-nav__link::before {
    margin-right: 12px;
    color: rgba(255, 255, 255, 0.72);
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    content: "\f054";
  }

  /*
    SPメニューのhover・キーボードフォーカス。
    ドロワー背景に白を薄く重ね、PCと同じ配色を保ちます。
  */
  .global-nav__link:hover,
  .global-nav__link:focus-visible {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.12);
  }

  .global-nav__link:hover::before,
  .global-nav__link:focus-visible::before {
    color: var(--color-white);
  }

  /*
    SPメニューのアクティブ表示。
    ドロワー背景が --color-main-dark のため、
    一段明るい --color-main で現在位置を示します。
  */
  body[data-section="home"]
    .global-nav__item[data-nav="home"]
    .global-nav__link,
  body[data-section="musiclibrary"]
    .global-nav__item[data-nav="musiclibrary"]
    .global-nav__link,
  body[data-section="programming"]
    .global-nav__item[data-nav="programming"]
    .global-nav__link,
  body[data-section="diary"]
    .global-nav__item[data-nav="diary"]
    .global-nav__link,
  body[data-section="contact"]
    .global-nav__item[data-nav="contact"]
    .global-nav__link {
    color: var(--color-white);
    background: var(--color-main);
  }

  body[data-section="home"]
    .global-nav__item[data-nav="home"]
    .global-nav__link::before,
  body[data-section="musiclibrary"]
    .global-nav__item[data-nav="musiclibrary"]
    .global-nav__link::before,
  body[data-section="programming"]
    .global-nav__item[data-nav="programming"]
    .global-nav__link::before,
  body[data-section="diary"]
    .global-nav__item[data-nav="diary"]
    .global-nav__link::before,
  body[data-section="contact"]
    .global-nav__item[data-nav="contact"]
    .global-nav__link::before {
    color: var(--color-white);
  }
}


/* =========================================================
   6. ページタイトル
   背景はブラウザ幅100％、文字はコンテンツ幅
   ========================================================= */

.page-title {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-top: 1px solid rgba(var(--color-main-rgb), 0.22);
  border-bottom: 1px solid rgba(var(--color-main-rgb), 0.34);
  background:
    linear-gradient(
      90deg,
      var(--color-main-light) 0%,
      var(--color-main-pale) 72%,
      var(--color-background) 100%
    );
}


.page-title__heading {
  margin: 0;
  padding: clamp(22px, 3.5vw, 38px) 0;
  color: var(--color-main-dark);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 400;
  letter-spacing: 0.035em;
}

@media (max-width: 900px) {

  .page-title__heading {
    padding-block: 20px;
    font-size: clamp(1.55rem, 7vw, 2rem);
  }
}


/* =========================================================
   7. パンくずリスト
   ========================================================= */

.breadcrumb {
  padding: 20px 0 24px;
  font-size: 0.78rem;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  color: var(--color-text-light);
}

.breadcrumb__item:not(:last-child)::after {
  margin-left: 9px;
  color: var(--color-border-dark);
  font-family: "Font Awesome 6 Free";
  font-size: 0.72em;
  font-weight: 900;
  content: "\f054";
}

.breadcrumb a {
  color: var(--color-text-sub);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-main);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}


/* =========================================================
   8. セクショントップ・メインビジュアル
   ========================================================= */

.section-index {
  min-width: 0;
}

.section-visual {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-small);
  background: var(--color-main-light);
  clip-path: inset(0 round var(--radius-small));
}

.section-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 1;
  object-fit: cover;
  object-position: center;
}

.section-visual::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 20%;
  background: linear-gradient(
    to top,
    rgba(255, 255, 255, 0.58),
    rgba(255, 255, 255, 0)
  );
  pointer-events: none;
  content: "";
}

@media (max-width: 900px) {
  .section-visual img {
    aspect-ratio: 16 / 7;
  }
}

@media (max-width: 600px) {
  .section-visual img {
    aspect-ratio: 4 / 3;
  }
}


/* =========================================================
   9. 紹介文・汎用セクション
   ========================================================= */

.section-introduction {
  max-width: 920px;
  margin: clamp(42px, 6vw, 72px) auto 0;
  text-align: center;
}

.section-title {
  position: relative;
  margin-bottom: 24px;
  padding-bottom: 15px;
  color: var(--color-main-dark);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-weight: 400;
}

.section-title::after {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 76px;
  height: 2px;
  background: var(--color-main);
  transform: translateX(-50%);
  content: "";
}

.section-introduction p {
  color: var(--color-text-sub);
  font-size: 1.02rem;
  line-height: 2;
}

.section-block {
  margin-top: clamp(64px, 9vw, 108px);
}

.section-block--sub {
  margin-top: clamp(56px, 7vw, 88px);
}

.section-heading {
  margin-bottom: clamp(28px, 4vw, 42px);
  text-align: center;
}

.section-heading__en {
  margin: 0 0 4px;
  color: var(--color-main);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.78rem;
  line-height: 1.4;
  letter-spacing: 0.2em;
}

.section-heading__title {
  position: relative;
  margin: 0;
  padding-bottom: 14px;
  font-size: clamp(1.35rem, 2.5vw, 1.7rem);
  font-weight: 500;
}

.section-heading__title::after {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 46px;
  height: 1px;
  background: var(--color-main);
  transform: translateX(-50%);
  content: "";
}

@media (max-width: 600px) {
  .section-introduction {
    text-align: left;
  }

  .section-title {
    text-align: center;
  }
}


/* =========================================================
   10. メインカテゴリーカード
   画像なし・PC 2列 / SP 1列
   ========================================================= */

.category-card-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(22px, 3vw, 36px);
}

.category-card {
  min-width: 0;
}

.category-card__link {
  position: relative;
  display: flex;
  min-height: 270px;
  overflow: hidden;
  flex-direction: column;
  padding: clamp(28px, 4vw, 46px);
  border: 1px solid rgba(var(--color-main-rgb), 0.38);
  border-top: 5px solid var(--color-main);
  border-radius: var(--radius-small);
  color: var(--color-text);
  background:
    linear-gradient(
      145deg,
      var(--color-background) 0%,
      var(--color-background) 68%,
      var(--color-main-pale) 100%
    );
  text-decoration: none;
  transition:
    border-color var(--transition-base),
    background-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.category-card__link::after {
  position: absolute;
  right: -58px;
  bottom: -80px;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(var(--color-main-rgb), 0.12);
  border-radius: 50%;
  content: "";
  transition: transform 0.6s ease;
}

.category-card__link:hover,
.category-card__link:focus-visible {
  border-color: var(--color-main);
  background: var(--color-main-pale);
  box-shadow: var(--shadow-soft);
  transform: translateY(-3px);
}

.category-card__link:hover::after,
.category-card__link:focus-visible::after {
  transform: scale(1.18);
}

.category-card__en {
  margin: 0 0 12px;
  color: var(--color-main);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.76rem;
  line-height: 1.4;
  letter-spacing: 0.22em;
}

.category-card__title {
  margin: 0 0 20px;
  color: var(--color-main-dark);
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 500;
}

.category-card__title-en {
  display: inline-block;
  margin-left: 0.5em;
  color: var(--color-text-light);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.62em;
  font-weight: 400;
}

.category-card__description {
  max-width: 32em;
  margin-bottom: 28px;
  color: var(--color-text-sub);
  font-size: 0.94rem;
  line-height: 1.85;
}

.category-card__more {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  color: var(--color-main-dark);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.category-card__more .fa-solid {
  transition: transform var(--transition-fast);
}

.category-card__link:hover .category-card__more .fa-solid,
.category-card__link:focus-visible .category-card__more .fa-solid {
  transform: translateX(5px);
}

@media (max-width: 900px) {
  .category-card-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .category-card__link {
    min-height: 230px;
  }
}

@media (max-width: 600px) {
  .category-card__link {
    min-height: 0;
    padding: 28px 24px;
  }

  .category-card__title-en {
    display: block;
    margin: 5px 0 0;
  }
}


/* =========================================================
   11. 補助リンク
   ========================================================= */

.sub-link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sub-link-list__item {
  min-width: 0;
}

.sub-link-list__link {
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 18px;
  border-bottom: 1px solid rgba(var(--color-main-rgb), 0.4);
  color: var(--color-text);
  background: var(--color-background);
  font-size: 0.9rem;
  line-height: 1.55;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    padding-inline var(--transition-fast);
}

.sub-link-list__link::before {
  flex: 0 0 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-main-light);
  content: "";
  transition: background-color var(--transition-fast);
}

.sub-link-list__link .fa-solid {
  flex: 0 0 auto;
  color: var(--color-main);
  font-size: 0.78rem;
  transition: transform var(--transition-fast);
}

.sub-link-list__link:hover,
.sub-link-list__link:focus-visible {
  color: var(--color-main-dark);
  background: var(--color-main-pale);
  padding-right: 14px;
  padding-left: 22px;
}

.sub-link-list__link:hover::before,
.sub-link-list__link:focus-visible::before {
  background: var(--color-main);
}

.sub-link-list__link:hover .fa-solid,
.sub-link-list__link:focus-visible .fa-solid {
  transform: translateX(4px);
}

@media (max-width: 900px) {
  .sub-link-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .sub-link-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .sub-link-list__link {
    min-height: 60px;
  }
}


/* =========================================================
   12. 下層ページ用サイドメニュー
   ========================================================= */

.side-menu {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-background);
}

.side-menu__title {
  margin: 0;
  padding: 16px 18px;
  color: var(--color-white);
  background: var(--color-main);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 1.15rem;
  font-weight: 400;
}

.side-menu__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.side-menu__item + .side-menu__item {
  border-top: 1px solid var(--color-border);
}

.side-menu__link {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  color: var(--color-text);
  background: var(--color-background);
  text-decoration: none;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.side-menu__link::after {
  color: var(--color-main);
  font-family: "Font Awesome 6 Free";
  font-size: 0.72rem;
  font-weight: 900;
  content: "\f054";
}

.side-menu__link:hover,
.side-menu__link:focus-visible,
.side-menu__item.is-current .side-menu__link,
.side-menu__link[aria-current="page"] {
  color: var(--color-main-dark);
  background: var(--color-main-light);
}

@media (max-width: 900px) {
  .side-menu {
    order: -1;
  }

  .side-menu__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .side-menu__item + .side-menu__item {
    border-top: 0;
  }

  .side-menu__item {
    border-top: 1px solid var(--color-border);
  }

  .side-menu__item:nth-child(odd) {
    border-right: 1px solid var(--color-border);
  }
}

@media (max-width: 600px) {
  .side-menu__list {
    grid-template-columns: minmax(0, 1fr);
  }

  .side-menu__item:nth-child(odd) {
    border-right: 0;
  }
}


/* =========================================================
   13. 通常コンテンツ用見出し
   ========================================================= */

.article-content h2 {
  margin: 2.5em 0 1em;
  padding: 0 0 0.55em;
  border-bottom: 2px solid var(--color-main);
  color: var(--color-main-dark);
}

.article-content h3 {
  margin: 2.2em 0 0.9em;
  padding: 0.4em 0 0.55em;
  border-bottom: 2px solid var(--color-main);
  background: transparent;
}

.article-content h4 {
  margin: 1.9em 0 0.75em;
  padding-bottom: 0.35em;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-main-dark);
}

.article-content > :first-child {
  margin-top: 0;
}




/* =========================================================
   13A. Music Library：オルガン曲ページ
   ========================================================= */

/* スクリーンリーダー用見出し */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
}


/* 通常ページのページタイトル補助表記 */
.page-title__section {
  margin: 0;
  padding-top: clamp(18px, 2.5vw, 28px);
  color: var(--color-main);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.75rem;
  line-height: 1.4;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-title__section + .page-title__heading {
  padding-top: 5px;
}

.page-title__heading-en {
  display: inline-block;
  margin-left: 0.7em;
  color: var(--color-text-light);
  font-size: 0.46em;
  letter-spacing: 0.04em;
  vertical-align: 0.15em;
}


/* サイドメニューのタイトルをトップへのリンクとして使用 */
.side-menu__title {
  line-height: 1.5;
}

.side-menu__title a {
  display: block;
  color: var(--color-white);
  text-decoration: none;
}

.side-menu__title a:hover,
.side-menu__title a:focus-visible {
  color: var(--color-white);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}


/* ページ冒頭の紹介 */
.page-introduction {
  margin-bottom: clamp(32px, 5vw, 48px);
  padding: clamp(22px, 3.5vw, 34px);
  border-top: 1px solid rgba(var(--color-main-rgb), 0.38);
  border-bottom: 1px solid rgba(var(--color-main-rgb), 0.38);
  background: var(--color-main-pale);
}

.page-introduction p {
  margin-bottom: 0.6em;
}

.page-introduction__note {
  color: var(--color-text-sub);
  font-size: 0.9rem;
}


/* 作曲家ページ内メニュー */
.composer-nav {
  margin-bottom: clamp(52px, 7vw, 76px);
  padding: 22px clamp(18px, 3vw, 28px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-background);
}

.composer-nav__label {
  margin: 0 0 12px;
  color: var(--color-main);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.72rem;
  line-height: 1.4;
  letter-spacing: 0.18em;
}

.composer-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.composer-nav__list a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid rgba(var(--color-main-rgb), 0.35);
  border-radius: 999px;
  color: var(--color-main-dark);
  background: var(--color-background);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.76rem;
  line-height: 1.45;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.composer-nav__list a:hover,
.composer-nav__list a:focus-visible {
  color: var(--color-white);
  border-color: var(--color-main);
  background: var(--color-main);
}


/* 作曲家セクション */
.composer-section {
  scroll-margin-top: 24px;
}

.composer-section + .composer-section {
  margin-top: clamp(72px, 9vw, 108px);
}

.composer-section__header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2px 18px;
  align-items: end;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--color-main);
}

.article-content .composer-section__name {
  margin: 0;
  padding: 0;
  border: 0;
  color: var(--color-main-dark);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: clamp(1.25rem, 2.3vw, 1.68rem);
  font-weight: 400;
  letter-spacing: 0.015em;
}

.composer-section__years {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  color: var(--color-text-light);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.82rem;
}

.composer-section__name-ja {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--color-text-sub);
  font-size: 0.9rem;
}


/* 作品ブロック */
.music-work {
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-main);
  border-radius: var(--radius-small);
  background:
    linear-gradient(
      150deg,
      var(--color-background) 0%,
      var(--color-background) 74%,
      var(--color-main-pale) 100%
    );
}

.music-work + .music-work {
  margin-top: 28px;
}

.music-work__header {
  margin-bottom: 20px;
}

.article-content .music-work__title {
  margin: 0 0 7px;
  padding: 0;
  border: 0;
  color: var(--color-text);
  background: transparent;
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 400;
  line-height: 1.65;
}

.music-work__title-ja {
  margin: 0;
  color: var(--color-text-sub);
  font-size: 0.92rem;
  line-height: 1.75;
}

.music-work__action {
  margin: 0 0 24px;
}


/* YouTubeリンク */
.youtube-link {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  gap: 9px;
  padding: 8px 16px;
  border: 1px solid rgba(var(--color-main-rgb), 0.45);
  border-radius: 999px;
  color: var(--color-main-dark);
  background: var(--color-background);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.youtube-link .fa-youtube {
  color: #c4302b;
  font-size: 1.15em;
}

.youtube-link .fa-arrow-up-right-from-square {
  font-size: 0.72em;
}

.youtube-link:hover,
.youtube-link:focus-visible {
  color: var(--color-white);
  border-color: var(--color-main-dark);
  background: var(--color-main-dark);
}

.youtube-link:hover .fa-youtube,
.youtube-link:focus-visible .fa-youtube {
  color: var(--color-white);
}


/* 演奏・作品情報 */
.music-data {
  margin: 0;
  border-top: 1px solid var(--color-border);
}

.music-data__row {
  display: grid;
  grid-template-columns: minmax(118px, 0.28fr) minmax(0, 1fr);
  margin: 0;
  border-bottom: 1px solid var(--color-border);
}

.music-data dt,
.music-data dd {
  margin: 0;
  padding: 10px 13px;
}

.music-data dt {
  color: var(--color-main-dark);
  background: var(--color-main-light);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.015em;
}

.music-data dd {
  min-width: 0;
  color: var(--color-text-sub);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.88rem;
  overflow-wrap: anywhere;
}


@media (max-width: 900px) {
  .page-title__heading-en {
    margin-left: 0.5em;
  }

  .composer-section {
    scroll-margin-top: 16px;
  }
}


@media (max-width: 600px) {
  .page-title__heading-en {
    display: block;
    margin: 4px 0 0;
    font-size: 0.52em;
  }

  .composer-nav__list {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .composer-nav__list a {
    width: 100%;
    border-radius: var(--radius-small);
  }

  .composer-section__header {
    display: block;
  }

  .composer-section__years {
    margin-top: 4px;
  }

  .composer-section__name-ja {
    margin-top: 3px;
  }

  .music-work {
    padding: 24px 20px;
  }

  .music-data__row {
    grid-template-columns: minmax(0, 1fr);
  }

  .music-data dt {
    padding-bottom: 4px;
    border-bottom: 0;
  }

  .music-data dd {
    padding-top: 4px;
    background: var(--color-background);
  }
}




/* =========================================================
   13B. 追加コンポーネント
   ========================================================= */

/* サイドメニューなしの通常ページ */
.single-column-content {
  width: min(100%, 920px);
  margin-inline: auto;
}


/* グレゴリオ聖歌：PDFリンク */
.pdf-link {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  gap: 9px;
  padding: 8px 16px;
  border: 1px solid rgba(var(--color-main-rgb), 0.45);
  border-radius: 999px;
  color: var(--color-main-dark);
  background: var(--color-background);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.pdf-link .fa-file-pdf {
  color: #b3262d;
  font-size: 1.12em;
}

.pdf-link .fa-arrow-up-right-from-square {
  font-size: 0.72em;
}

.pdf-link:hover,
.pdf-link:focus-visible {
  color: var(--color-white);
  border-color: var(--color-main-dark);
  background: var(--color-main-dark);
}

.pdf-link:hover .fa-file-pdf,
.pdf-link:focus-visible .fa-file-pdf {
  color: var(--color-white);
}

.document-work__label {
  margin: 0 0 8px;
  color: var(--color-main);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.72rem;
  line-height: 1.4;
  letter-spacing: 0.18em;
}


/* Music Library：音声プレーヤー */
.music-work__type {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  color: var(--color-main);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.72rem;
  line-height: 1.4;
  letter-spacing: 0.16em;
}

.music-work__type .fa-guitar {
  font-size: 1.05rem;
}

.audio-player-wrap {
  margin: 0 0 24px;
  padding: 14px 16px;
  border: 1px solid rgba(var(--color-main-rgb), 0.28);
  border-radius: var(--radius-small);
  background: var(--color-main-pale);
}

.audio-player {
  display: block;
  width: 100%;
  min-height: 42px;
  accent-color: var(--color-main);
}


/* Music Library：外部リンク一覧 */
.link-section + .link-section {
  margin-top: clamp(64px, 8vw, 96px);
}

.link-section__header {
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--color-main);
}

.link-section__en {
  margin: 0 0 4px;
  color: var(--color-main);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.72rem;
  line-height: 1.4;
  letter-spacing: 0.18em;
}

.article-content .link-section__title {
  margin: 0;
  padding: 0;
  border: 0;
  color: var(--color-main-dark);
  font-size: clamp(1.25rem, 2.3vw, 1.62rem);
  font-weight: 500;
}

.external-link-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.external-link-card {
  min-width: 0;
}

.external-link-card__link {
  display: block;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-main);
  border-radius: var(--radius-small);
  color: var(--color-text);
  background:
    linear-gradient(
      145deg,
      var(--color-background) 0%,
      var(--color-background) 76%,
      var(--color-main-pale) 100%
    );
  text-decoration: none;
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.external-link-card__link:hover,
.external-link-card__link:focus-visible {
  border-color: var(--color-main);
  background: var(--color-main-pale);
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

.external-link-card__heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px 10px;
  color: var(--color-main-dark);
}

.external-link-card__title {
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: clamp(1rem, 2vw, 1.16rem);
  font-weight: 700;
  line-height: 1.55;
}

.external-link-card__language {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  padding: 2px 8px;
  border: 1px solid rgba(var(--color-main-rgb), 0.35);
  border-radius: 999px;
  color: var(--color-main);
  background: var(--color-background);
  font-size: 0.68rem;
  line-height: 1.3;
}

.external-link-card__heading .fa-solid {
  margin-left: auto;
  color: var(--color-main);
  font-size: 0.78rem;
  transition: transform var(--transition-fast);
}

.external-link-card__description {
  display: block;
  margin-top: 11px;
  color: var(--color-text-sub);
  font-size: 0.88rem;
  line-height: 1.8;
}

.external-link-card__link:hover
  .external-link-card__heading .fa-solid,
.external-link-card__link:focus-visible
  .external-link-card__heading .fa-solid {
  transform: translate(2px, -2px);
}


/* Programming：お知らせ */
.information-panel {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-main);
  border-radius: var(--radius-small);
  background: var(--color-background);
}

.information-panel__header {
  position: relative;
  padding: clamp(22px, 3vw, 30px);
  padding-right: clamp(120px, 18vw, 180px);
  background:
    linear-gradient(
      145deg,
      var(--color-background) 0%,
      var(--color-main-pale) 100%
    );
}

.information-panel__title {
  margin: 0;
  color: var(--color-main-dark);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
}

.information-panel__title-en {
  margin: 5px 0 0;
  color: var(--color-text-sub);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.8rem;
}

.information-panel__date {
  position: absolute;
  top: clamp(22px, 3vw, 30px);
  right: clamp(22px, 3vw, 30px);
  color: var(--color-text-light);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.78rem;
}

.information-panel__body {
  padding: clamp(22px, 3vw, 30px);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-sub);
  font-size: 0.92rem;
}

.information-panel__body p {
  margin-bottom: 0.45em;
}


/* Programming：更新情報 */
.update-list {
  border-top: 1px solid var(--color-border);
}

.update-list__item {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.update-list__date {
  color: var(--color-text-light);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.78rem;
}

.update-list__content {
  min-width: 0;
}

.update-list__heading {
  margin: 0;
  line-height: 1.65;
}

.update-list__heading a {
  color: var(--color-main-dark);
  font-weight: 700;
  text-decoration: none;
}

.update-list__heading a:hover,
.update-list__heading a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.update-list__status {
  display: inline-flex;
  min-height: 23px;
  align-items: center;
  margin-left: 8px;
  padding: 2px 8px;
  border: 1px solid rgba(var(--color-main-rgb), 0.35);
  border-radius: 999px;
  color: var(--color-main);
  background: var(--color-main-pale);
  font-size: 0.66rem;
  line-height: 1.2;
}

.update-list__description {
  margin: 12px 0 0;
  color: var(--color-text-sub);
  font-size: 0.88rem;
  line-height: 1.8;
}


/* 共通：準備中表示 */
.coming-soon {
  display: grid;
  min-height: 260px;
  place-content: center;
  padding: clamp(42px, 7vw, 72px) 24px;
  border-top: 1px solid rgba(var(--color-main-rgb), 0.38);
  border-bottom: 1px solid rgba(var(--color-main-rgb), 0.38);
  background:
    linear-gradient(
      145deg,
      var(--color-background) 0%,
      var(--color-main-pale) 100%
    );
  text-align: center;
}

.coming-soon__date {
  margin: 0 0 14px;
  color: var(--color-text-light);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
}

.coming-soon__en {
  margin: 0;
  color: var(--color-main-dark);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: clamp(1.55rem, 4vw, 2.35rem);
  line-height: 1.4;
  letter-spacing: 0.12em;
}

.coming-soon__ja {
  margin: 12px 0 0;
  color: var(--color-text-sub);
  font-size: 0.9rem;
}


@media (max-width: 600px) {
  .audio-player-wrap {
    padding: 12px;
  }

  .external-link-card__heading .fa-solid {
    align-self: flex-start;
    margin-top: 5px;
  }

  .information-panel__header {
    padding-right: 22px;
  }

  .information-panel__date {
    position: static;
    display: block;
    margin-top: 12px;
  }

  .update-list__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 7px;
    padding: 20px 0;
  }

  .coming-soon {
    min-height: 210px;
  }

  .coming-soon__en {
    letter-spacing: 0.08em;
  }
}




/* =========================================================
   13F. Contact：お問い合わせフォーム
   ========================================================= */

.contact-form {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-main);
  border-radius: var(--radius-small);
  background: var(--color-background);
}

.contact-form__fields {
  display: grid;
}

.contact-field {
  display: grid;
  grid-template-columns: minmax(210px, 0.34fr) minmax(0, 1fr);
  border-bottom: 1px solid var(--color-border);
}

.contact-field__label {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  padding: 18px 20px;
  color: var(--color-main-dark);
  background: var(--color-main-light);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.55;
}

.contact-field__label-en {
  color: var(--color-text-sub);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.72rem;
  font-weight: 400;
}

.required-mark {
  color: #b3262d;
  font-weight: 700;
}

.contact-field__control {
  min-width: 0;
  padding: 16px 18px;
  background: var(--color-background);
}

.contact-control {
  display: block;
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-small);
  color: var(--color-text);
  background: var(--color-background);
  line-height: 1.6;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
}

textarea.contact-control {
  min-height: 180px;
  resize: vertical;
}

.contact-control:hover {
  border-color: var(--color-main);
}

.contact-control:focus {
  border-color: var(--color-main);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(var(--color-main-rgb), 0.16);
}


/* ブラウザ標準の入力エラー */
input:invalid, textarea:invalid {
  border-color: #c46f59;
  background: #fff7f3;
  box-shadow: 0 0 0 3px rgba(196, 111, 89, 0.14);
}


.contact-confirmation {
  padding: clamp(22px, 3.5vw, 30px);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-main-pale);
}

.contact-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
}

.contact-checkbox input {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin: 4px 0 0;
  accent-color: var(--color-main);
}

.contact-checkbox__text {
  display: grid;
  gap: 3px;
  color: var(--color-text-sub);
  font-size: 0.88rem;
  line-height: 1.7;
}

.contact-form__actions {
  padding: clamp(24px, 4vw, 34px);
  text-align: center;
}

.contact-submit,
.home-button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 24px;
  border: 1px solid var(--color-main-dark);
  border-radius: 999px;
  color: var(--color-white);
  background: var(--color-main-dark);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

.contact-submit span[lang="en"] {
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.78em;
  font-weight: 400;
}

.contact-submit:hover,
.contact-submit:focus-visible,
.home-button:hover,
.home-button:focus-visible {
  color: var(--color-main-dark);
  background: var(--color-background);
  transform: translateY(-2px);
}

.contact-submit:disabled {
  color: var(--color-text-light);
  border-color: var(--color-border-dark);
  background: var(--color-background-sub);
  cursor: wait;
  transform: none;
}


/* 送信完了 */
.sent-message {
  padding: clamp(42px, 7vw, 72px) clamp(22px, 5vw, 54px);
  border-top: 4px solid var(--color-main);
  border-bottom: 1px solid rgba(var(--color-main-rgb), 0.34);
  background:
    linear-gradient(
      145deg,
      var(--color-background) 0%,
      var(--color-main-pale) 100%
    );
  text-align: center;
}

.sent-message__icon {
  display: grid;
  width: 68px;
  height: 68px;
  margin: 0 auto 22px;
  place-items: center;
  border: 1px solid rgba(var(--color-main-rgb), 0.38);
  border-radius: 50%;
  color: var(--color-main);
  background: var(--color-background);
  font-size: 2rem;
}

.article-content .sent-message__title {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
  color: var(--color-main-dark);
  font-size: clamp(1.35rem, 3vw, 1.8rem);
}

.sent-message__text {
  margin-bottom: 0.5em;
  color: var(--color-text-sub);
}

.sent-message__action {
  margin-top: 28px;
}


@media (max-width: 700px) {
  .contact-field {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-field__label {
    padding-bottom: 8px;
  }

  .contact-field__control {
    padding-top: 8px;
  }
}


@media (max-width: 600px) {
  .contact-submit,
  .home-button {
    width: 100%;
    border-radius: var(--radius-small);
  }
}




/* =========================================================
   13G. トップページ
   ========================================================= */

.home-main {
  padding-top: clamp(34px, 5vw, 58px);
}


.home-category-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 2.6vw, 30px);
}

.home-category-card {
  min-width: 0;
}

.home-category-card__link {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  color: var(--color-white);
  background: #555957;
  box-shadow: var(--shadow-soft);
  clip-path: inset(0 round var(--radius-small));
  text-decoration: none;
}

.home-category-card__image {
  display: block;
  width: 100%;
  aspect-ratio: 5 / 3;
  object-fit: cover;
  transition:
    filter var(--transition-base),
    transform 0.55s ease;
}

.home-category-card__band {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  min-height: 40px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 18px;
  color: var(--color-white);
  background: rgba(60, 63, 62, 0.4);
  backdrop-filter: blur(2px);
}

.home-category-card__title {
  min-width: 0;
  overflow: hidden;
  color: var(--color-white);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.42);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: clamp(1rem, 2vw, 1.28rem);
  line-height: 1.4;
  letter-spacing: 0.025em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.home-category-card__band .fa-solid {
  flex: 0 0 auto;
  font-size: 0.85rem;
  transition: transform var(--transition-fast);
}

.home-category-card__link:hover .home-category-card__image,
.home-category-card__link:focus-visible .home-category-card__image {
  filter: brightness(0.92);
  transform: scale(1.035);
}

.home-category-card__link:hover .home-category-card__band .fa-solid,
.home-category-card__link:focus-visible .home-category-card__band .fa-solid {
  transform: translateX(4px);
}


/* カード下：お知らせ＋バナー */
.home-content-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(250px, 0.82fr);
  gap: clamp(34px, 5vw, 66px);
  align-items: start;
  margin-top: clamp(52px, 7vw, 84px);
}

.home-news-column {
  min-width: 0;
}

.home-banner-column {
  /*
    INFORMATION・お知らせの見出し部分と同じ高さを確保し、
    最初のバナー上端を見出し下線の位置に合わせます。
  */
  padding-top: clamp(62px, 5.8vw, 70px);
}

.home-news-section + .home-news-section {
  margin-top: clamp(58px, 7vw, 86px);
}

.home-section-heading {
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-main);
}

.home-section-heading--with-action {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
}

.home-section-heading__en {
  margin: 0 0 2px;
  color: var(--color-main);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.7rem;
  line-height: 1.4;
  letter-spacing: 0.18em;
}

.home-section-heading__title {
  margin: 0;
  color: var(--color-main-dark);
  font-size: clamp(1.22rem, 2.2vw, 1.52rem);
  font-weight: 500;
}

.home-rss-link {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  gap: 7px;
  padding: 5px 11px;
  border: 1px solid var(--color-border-dark);
  border-radius: 999px;
  color: var(--color-text-sub);
  background: var(--color-background);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.7rem;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.home-rss-link:hover,
.home-rss-link:focus-visible {
  color: var(--color-white);
  border-color: var(--color-main-dark);
  background: var(--color-main-dark);
}

.home-news-column .update-list__description a {
  color: var(--color-main-dark);
  font-weight: 700;
  text-decoration: none;
}

.home-news-column .update-list__description a:hover,
.home-news-column .update-list__description a:focus-visible {
  text-decoration: underline;
}


/* Twitter・YouTube・サイトマップ */
.home-banner-list {
  display: grid;
  gap: 16px;
}

.home-banner {
  display: flex;
  min-height: 96px;
  align-items: center;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-main);
  border-radius: var(--radius-small);
  color: var(--color-text);
  background:
    linear-gradient(
      145deg,
      var(--color-background) 0%,
      var(--color-main-pale) 100%
    );
  text-decoration: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.home-banner:hover,
.home-banner:focus-visible {
  border-color: var(--color-main);
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

.home-banner__icon {
  display: grid;
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 50%;
  color: var(--color-white);
  background: #565b58;
  font-size: 1.25rem;
}

.home-banner--youtube .home-banner__icon {
  background: #b3262d;
}

.home-banner--sitemap .home-banner__icon {
  background: var(--color-main-dark);
}

.home-banner__body {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.home-banner__title {
  color: var(--color-main-dark);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 1rem;
  font-weight: 700;
}

.home-banner__text {
  color: var(--color-text-sub);
  font-size: 0.78rem;
  line-height: 1.5;
}

.home-banner__arrow {
  flex: 0 0 auto;
  margin-left: auto;
  color: var(--color-main);
  font-size: 0.78rem;
  transition: transform var(--transition-fast);
}

.home-banner:hover .home-banner__arrow,
.home-banner:focus-visible .home-banner__arrow {
  transform: translate(2px, -2px);
}

.home-banner--sitemap:hover .home-banner__arrow,
.home-banner--sitemap:focus-visible .home-banner__arrow {
  transform: translateX(4px);
}


/* サイト利用について */
.home-site-note {
  margin-top: clamp(70px, 9vw, 112px);
  padding: clamp(20px, 3vw, 28px);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-sub);
  background: var(--color-background-sub);
  font-size: 0.78rem;
  line-height: 1.75;
}

.home-site-note p {
  margin-bottom: 0.35em;
}

.home-site-note .fa-envelope {
  margin-right: 0.55em;
  color: var(--color-main);
}

.home-site-note .fa-ban {
  margin-right: 0.55em;
  color: #b3262d;
}


@media (max-width: 900px) {
  .home-category-list,
  .home-content-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .home-category-card__image {
    aspect-ratio: 16 / 8;
  }

  .home-content-grid {
    gap: clamp(58px, 8vw, 78px);
  }

  .home-banner-column {
    order: 2;
    padding-top: 0;
  }
}


@media (max-width: 600px) {
  .home-main {
    padding-top: 24px;
  }

  .home-category-list {
    gap: 16px;
  }

  .home-category-card__image {
    aspect-ratio: 5 / 3;
  }

  .home-category-card__band {
    min-height: 54px;
    padding-inline: 16px;
  }

  .home-content-grid {
    margin-top: 64px;
  }

  .home-section-heading--with-action {
    align-items: center;
  }

  .home-banner {
    min-height: 88px;
  }
}




/* =========================================================
   13H. Aikido：合気道 学習帳
   ========================================================= */

/* 現在の横長メインビジュアルを、画面幅にかかわらず全体表示 */
.section-visual--aikido img {
  aspect-ratio: 3 / 1;
  object-fit: cover;
  object-position: center;
}

.section-visual--aikido::after {
  display: none;
}

.aikido-update {
  display: flex;
  justify-content: flex-end;
  gap: 0.45em;
  margin: 8px 0 0;
  color: var(--color-text-light);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.72rem;
  line-height: 1.5;
}

.aikido-contents {
  margin-top: clamp(34px, 5vw, 54px);
}

.aikido-link-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.aikido-link-list__item {
  display: flex;
  min-width: 0;
}

.aikido-link-button {
  position: relative;
  display: flex;
  width: 100%;
  min-height: 88px;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 15px 30px 15px 18px;
  border: 2px solid transparent;
  border-radius: var(--radius-medium);
  text-align: center;
  text-decoration: none;
  box-shadow: 0 2px 7px rgba(30, 30, 30, 0.06);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    filter var(--transition-fast),
    transform var(--transition-fast);
}

a.aikido-link-button:hover,
a.aikido-link-button:focus-visible {
  box-shadow: 0 7px 16px rgba(30, 30, 30, 0.11);
  filter: saturate(1.06);
  transform: translateY(-2px);
}

.aikido-link-button.is-disabled {
  padding-right: 18px;
  cursor: default;
}

.aikido-link-button__ja {
  color: inherit;
  font-size: clamp(0.84rem, 1.4vw, 0.96rem);
  font-weight: 700;
  line-height: 1.55;
}

.aikido-link-button__en {
  color: inherit;
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: clamp(0.66rem, 1.1vw, 0.76rem);
  line-height: 1.55;
}

.aikido-link-button .fa-chevron-right {
  position: absolute;
  top: 50%;
  right: 13px;
  font-size: 0.72rem;
  transform: translateY(-50%);
  transition: transform var(--transition-fast);
}

a.aikido-link-button:hover .fa-chevron-right,
a.aikido-link-button:focus-visible .fa-chevron-right {
  transform: translate(3px, -50%);
}


/* 基本技：現在の水色 */
.aikido-link-button--techniques {
  color: #2c708e;
  border-color: #84c5df;
  background: #cce9f4;
}


/* 剣・杖：現在の黄緑色 */
.aikido-link-button--weapons {
  color: #3e692c;
  border-color: #91c970;
  background: #d6edc7;
}


/* 引用：現在の淡いピンク色 */
.aikido-link-button--quotes {
  color: #974e5a;
  border-color: #dea0aa;
  background: #f5d0d6;
}


@media (max-width: 900px) {
  .section-visual--aikido img {
    aspect-ratio: 3 / 1;
  }

  .aikido-link-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}


@media (max-width: 600px) {
  .section-visual--aikido img {
    aspect-ratio: 3 / 1;
  }

  .aikido-update {
    font-size: 0.66rem;
  }

  .aikido-link-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .aikido-link-button {
    min-height: 78px;
  }
}




/* =========================================================
   13I. Aikido：誓詞
   ========================================================= */

.aikido-index-link {
  margin: 0 0 clamp(28px, 4vw, 42px);
}

.aikido-index-link a {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 9px;
  padding: 7px 15px;
  border: 1px solid rgba(var(--color-main-rgb), 0.42);
  border-radius: 999px;
  color: var(--color-main-dark);
  background: var(--color-background);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.aikido-index-link a span[lang="en"] {
  color: var(--color-text-light);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.78em;
  font-weight: 400;
}

.aikido-index-link a:hover,
.aikido-index-link a:focus-visible {
  color: var(--color-white);
  border-color: var(--color-main-dark);
  background: var(--color-main-dark);
}

.aikido-index-link a:hover span[lang="en"],
.aikido-index-link a:focus-visible span[lang="en"] {
  color: var(--color-white);
}


.oath-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(20px, 3.5vw, 34px);
  align-items: stretch;
}

.oath-card {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-top: 4px solid #dea0aa;
  border-radius: var(--radius-small);
  background: var(--color-background);
  box-shadow: var(--shadow-soft);
}

.oath-card__header {
  padding: clamp(20px, 3vw, 28px);
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(
      145deg,
      var(--color-background) 0%,
      #fcf1f3 100%
    );
}

.oath-card__label {
  margin: 0 0 5px;
  color: #974e5a;
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.68rem;
  line-height: 1.4;
  letter-spacing: 0.16em;
}

.article-content .oath-card__title {
  margin: 0;
  padding: 0;
  border: 0;
  color: #7f404b;
  font-size: clamp(1.2rem, 2.4vw, 1.56rem);
  font-weight: 600;
}

.oath-card__body {
  padding: clamp(24px, 3.5vw, 34px);
  color: var(--color-text-sub);
  line-height: 1.95;
}

.oath-card__body p {
  margin-bottom: 0.45em;
}

.oath-card--english .oath-card__body {
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.86rem;
  line-height: 1.85;
}

.oath-card__credit {
  margin-top: 24px !important;
  color: var(--color-text);
  font-weight: 700;
  text-align: right;
}

.aikido-page-updated {
  display: flex;
  justify-content: flex-end;
  gap: 0.45em;
  margin: 14px 0 0;
  color: var(--color-text-light);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.72rem;
  line-height: 1.5;
}


@media (max-width: 760px) {
  .oath-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}


@media (max-width: 600px) {
  .aikido-index-link a {
    width: 100%;
    justify-content: center;
    border-radius: var(--radius-small);
  }

  .oath-card__body {
    padding-inline: 20px;
  }

  .aikido-page-updated {
    font-size: 0.66rem;
  }
}




/* =========================================================
   13J. Aikido：足捌き
   ========================================================= */

.footwork-section + .footwork-section {
  margin-top: clamp(64px, 8vw, 96px);
}

.footwork-section__header {
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--color-main);
}

.footwork-section__number {
  margin: 0 0 5px;
  color: var(--color-main);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.article-content .footwork-section__title {
  margin: 0;
  padding: 0;
  border: 0;
  color: var(--color-main-dark);
  font-size: clamp(1.24rem, 2.5vw, 1.65rem);
  font-weight: 600;
}

.footwork-section__title span[lang="en"] {
  display: block;
  margin-top: 5px;
  color: var(--color-text-sub);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.58em;
  font-weight: 400;
  letter-spacing: 0.02em;
}


/* 手動ステップビューアー */
.footwork-viewer {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-top: 4px solid #84c5df;
  border-radius: var(--radius-small);
  background: var(--color-background);
  box-shadow: var(--shadow-soft);
}

.footwork-viewer:focus-visible {
  outline: 3px solid rgba(var(--color-main-rgb), 0.24);
  outline-offset: 4px;
}

.footwork-viewer__stage {
  min-height: 480px;
  padding: clamp(22px, 4vw, 36px);
  background:
    linear-gradient(
      145deg,
      var(--color-background) 0%,
      var(--color-main-pale) 100%
    );
}

.footwork-step[hidden] {
  display: none;
}

.footwork-step {
  margin: 0;
}

.footwork-step__image-wrap {
  display: grid;
  width: min(100%, 520px);
  min-height: 340px;
  margin-inline: auto;
  place-items: center;
  padding: clamp(14px, 2.5vw, 24px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-white);
}

.footwork-step__image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 340px;
  object-fit: contain;
}

.footwork-step__caption {
  display: grid;
  min-height: 88px;
  align-content: center;
  gap: 5px;
  margin-top: 18px;
  text-align: center;
}

.footwork-step__caption-ja {
  color: var(--color-main-dark);
  font-size: 0.96rem;
  font-weight: 700;
  line-height: 1.65;
}

.footwork-step__caption-en {
  color: var(--color-text-sub);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.78rem;
  line-height: 1.65;
}

.footwork-viewer__controls {
  display: grid;
  grid-template-columns: minmax(112px, 1fr) auto minmax(112px, 1fr);
  gap: 18px;
  align-items: center;
  padding: 18px clamp(18px, 3vw, 28px);
  border-top: 1px solid var(--color-border);
  background: var(--color-background);
}

.footwork-viewer__button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 8px 16px;
  border: 1px solid var(--color-main-dark);
  border-radius: 999px;
  color: var(--color-white);
  background: var(--color-main-dark);
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

.footwork-viewer__button:hover:not(:disabled),
.footwork-viewer__button:focus-visible:not(:disabled) {
  color: var(--color-main-dark);
  background: var(--color-white);
  transform: translateY(-1px);
}

.footwork-viewer__button:disabled {
  color: var(--color-text-light);
  border-color: var(--color-border);
  background: var(--color-background-sub);
  cursor: default;
}

.footwork-viewer__counter {
  min-width: 72px;
  margin: 0;
  color: var(--color-text-sub);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.82rem;
  text-align: center;
}

.footwork-note {
  margin: 14px 0 0;
  padding: 13px 16px;
  border: 1px solid rgba(var(--color-main-rgb), 0.22);
  border-radius: var(--radius-small);
  color: var(--color-text-sub);
  background: var(--color-main-pale);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.76rem;
  line-height: 1.7;
}


/* 未作成項目 */
.footwork-coming-soon {
  padding: 24px;
  border-top: 1px solid rgba(var(--color-main-rgb), 0.3);
  border-bottom: 1px solid rgba(var(--color-main-rgb), 0.3);
  background: var(--color-main-pale);
  text-align: center;
}

.footwork-coming-soon p {
  margin: 0;
  color: var(--color-text-sub);
  font-size: 0.82rem;
}

.footwork-coming-soon p[lang="en"] {
  margin-bottom: 5px;
  color: var(--color-main-dark);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 1rem;
  letter-spacing: 0.08em;
}


@media (max-width: 600px) {
  .footwork-viewer__stage {
    min-height: 390px;
    padding-inline: 16px;
  }

  .footwork-step__image-wrap {
    min-height: 270px;
    padding: 12px;
  }

  .footwork-step__image {
    max-height: 270px;
  }

  .footwork-step__caption {
    min-height: 96px;
  }

  .footwork-viewer__controls {
    grid-template-columns: 1fr auto 1fr;
    gap: 9px;
    padding-inline: 12px;
  }

  .footwork-viewer__button {
    min-width: 0;
    padding-inline: 11px;
    border-radius: var(--radius-small);
  }

  .footwork-viewer__counter {
    min-width: 54px;
  }
}




/* =========================================================
   13K. Programming：リンク
   ========================================================= */

.programming-link-card {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-main);
  border-radius: var(--radius-small);
  background: var(--color-background);
  box-shadow: var(--shadow-soft);
}

.programming-link-card__header {
  padding: clamp(22px, 3.5vw, 30px);
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(
      145deg,
      var(--color-background) 0%,
      var(--color-main-pale) 100%
    );
}

.programming-link-card__heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  justify-content: space-between;
}

.article-content .programming-link-card__title {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: clamp(1.12rem, 2.2vw, 1.4rem);
}

.programming-link-card__title a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-main-dark);
  text-decoration: none;
}

.programming-link-card__title a:hover,
.programming-link-card__title a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.programming-link-card__title .fa-solid {
  color: var(--color-main);
  font-size: 0.72em;
}

.programming-link-card__badge {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  gap: 0.5em;
  padding: 3px 10px;
  border: 1px solid rgba(var(--color-main-rgb), 0.35);
  border-radius: 999px;
  color: var(--color-main-dark);
  background: var(--color-main-light);
  font-size: 0.7rem;
  line-height: 1.3;
}

.programming-link-card__badge span[lang="en"] {
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.9em;
}

.programming-link-card__body {
  padding: clamp(22px, 3.5vw, 30px);
}

.programming-link-data {
  margin: 0;
  border-top: 1px solid var(--color-border);
}

.programming-link-data__row {
  display: grid;
  grid-template-columns: minmax(155px, 0.3fr) minmax(0, 1fr);
  border-bottom: 1px solid var(--color-border);
}

.programming-link-data__row > dt,
.programming-link-data__row > dd {
  margin: 0;
  padding: 12px 14px;
}

.programming-link-data__row > dt {
  color: var(--color-main-dark);
  background: var(--color-main-light);
  font-size: 0.8rem;
  font-weight: 700;
}

.programming-link-data__row > dt span[lang="en"] {
  display: block;
  margin-top: 2px;
  color: var(--color-text-sub);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.76em;
  font-weight: 400;
}

.programming-link-data__row > dd {
  min-width: 0;
  color: var(--color-text-sub);
  font-size: 0.88rem;
  overflow-wrap: anywhere;
}

.programming-link-data__row > dd a {
  color: var(--color-main-dark);
  text-decoration: none;
}

.programming-link-data__row > dd a:hover,
.programming-link-data__row > dd a:focus-visible {
  text-decoration: underline;
}

.programming-link-data__row .fa-solid {
  margin-left: 0.35em;
  color: var(--color-main);
  font-size: 0.72em;
}

.programming-link-card__description {
  margin-top: 24px;
  color: var(--color-text-sub);
  font-size: 0.9rem;
}

.programming-link-card__description p {
  margin-bottom: 0.45em;
}


@media (max-width: 600px) {
  .programming-link-card__heading {
    align-items: flex-start;
  }

  .programming-link-data__row {
    grid-template-columns: minmax(0, 1fr);
  }

  .programming-link-data__row > dt {
    padding-bottom: 6px;
  }

  .programming-link-data__row > dd {
    padding-top: 6px;
  }
}




/* =========================================================
   13L. サイトマップ
   ========================================================= */

.sitemap-card-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(22px, 3.5vw, 34px);
  align-items: start;
}

.sitemap-card {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-main);
  border-radius: var(--radius-small);
  background: var(--color-background);
  box-shadow: var(--shadow-soft);
}

/* Music Library：エンジ系 */
.sitemap-card--music {
  --color-main: #8b4652;
  --color-main-dark: #67333d;
  --color-main-light: #f3e7e9;
  --color-main-pale: #faf6f7;
  --color-main-rgb: 139, 70, 82;

  border-top-color: var(--color-main);
}


/* Programming：青系 */
.sitemap-card--programming {
  --color-main: #426f91;
  --color-main-dark: #2f536e;
  --color-main-light: #e6eef4;
  --color-main-pale: #f5f8fa;
  --color-main-rgb: 66, 111, 145;

  border-top-color: var(--color-main);
}


/* Aikido：青系 */
.sitemap-card--aikido {
  --color-main: #2787b4;
  --color-main-dark: #1b6487;
  --color-main-light: #e3f1f7;
  --color-main-pale: #f4fafc;
  --color-main-rgb: 39, 135, 180;

  border-top-color: var(--color-main);
}

.sitemap-card--information {
  border-top-color: #6f7b73;
}

.sitemap-card__header {
  padding: clamp(22px, 3vw, 28px);
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(
      145deg,
      var(--color-background) 0%,
      var(--color-main-pale) 100%
    );
}

.sitemap-card__en {
  margin: 0 0 4px;
  color: var(--color-main);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.68rem;
  line-height: 1.4;
  letter-spacing: 0.16em;
}

.sitemap-card--programming .sitemap-card__en {
  color: #426f91;
}

.sitemap-card--aikido .sitemap-card__en {
  color: #2787b4;
}

.sitemap-card--information .sitemap-card__en {
  color: #6f7b73;
}

.article-content .sitemap-card__title {
  margin: 0;
  padding: 0;
  border: 0;
  color: var(--color-main-dark);
  font-size: clamp(1.18rem, 2.2vw, 1.46rem);
  font-weight: 600;
}

.sitemap-card__title span[lang="en"] {
  display: block;
  margin-top: 4px;
  color: var(--color-text-sub);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.52em;
  font-weight: 400;
}

.sitemap-link-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.sitemap-link-list li + li {
  border-top: 1px solid var(--color-border);
}

.sitemap-link-list a {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 12px clamp(18px, 3vw, 24px);
  color: var(--color-text);
  background: var(--color-background);
  font-size: 0.86rem;
  line-height: 1.6;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.sitemap-link-list a:hover,
.sitemap-link-list a:focus-visible {
  color: var(--color-main-dark);
  background: var(--color-main-pale);
}

.sitemap-link-list a > span {
  min-width: 0;
}

.sitemap-link-list span[lang="en"] {
  color: var(--color-text-sub);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.9em;
}

.sitemap-link-list .fa-solid {
  flex: 0 0 auto;
  color: var(--color-main);
  font-size: 0.7rem;
  transition: transform var(--transition-fast);
}

.sitemap-card--programming .sitemap-link-list .fa-solid {
  color: #426f91;
}

.sitemap-card--aikido .sitemap-link-list .fa-solid {
  color: #2787b4;
}

.sitemap-card--information .sitemap-link-list .fa-solid {
  color: #6f7b73;
}

.sitemap-link-list a:hover .fa-chevron-right,
.sitemap-link-list a:focus-visible .fa-chevron-right {
  transform: translateX(4px);
}

.sitemap-link-list a:hover .fa-arrow-up-right-from-square,
.sitemap-link-list a:focus-visible .fa-arrow-up-right-from-square {
  transform: translate(2px, -2px);
}


@media (max-width: 760px) {
  .sitemap-card-list {
    grid-template-columns: minmax(0, 1fr);
  }
}


@media (max-width: 600px) {
  .sitemap-link-list a {
    min-height: 50px;
    padding-inline: 16px;
  }
}


/* =========================================================
   14. フッター
   footer.htmlで想定する主なクラス：
   .site-footer / .footer-inner / .footer-note / .copyright
   ========================================================= */

.site-footer {
  flex: 0 0 auto;
  width: 100%;
  border-top: 4px solid var(--color-main);
  color: var(--color-text-sub);
  background: var(--color-main-pale);
}

.footer-inner {
  padding-block: clamp(34px, 5vw, 54px);
  text-align: center;
}

.footer-note {
  margin-bottom: 12px;
  font-size: 0.78rem;
  line-height: 1.7;
}

.copyright {
  margin: 0;
  color: var(--color-text-light);
  font-family: "Libre Baskerville", Georgia, "Times New Roman", serif;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}


/* =========================================================
   15. ページ上部へ戻る
   ========================================================= */

.page-top {
  visibility: hidden;
  position: fixed;
  z-index: 90;
  right: max(22px, env(safe-area-inset-right));
  bottom: max(22px, env(safe-area-inset-bottom));
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  color: var(--color-white);
  background: rgba(var(--color-main-rgb), 0.9);
  box-shadow: 0 5px 16px rgba(0, 0, 0, 0.16);
  opacity: 0;
  text-decoration: none;
  transform: translateY(12px);
  transition:
    visibility var(--transition-base),
    opacity var(--transition-base),
    transform var(--transition-base),
    background-color var(--transition-fast);
}

.page-top.is-visible {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.page-top:hover,
.page-top:focus-visible {
  color: var(--color-white);
  background: var(--color-main-dark);
}

@media (max-width: 600px) {
  .page-top {
    right: max(14px, env(safe-area-inset-right));
    bottom: max(14px, env(safe-area-inset-bottom));
    width: 44px;
    height: 44px;
  }
}


/* =========================================================
   16. 印刷・モーション軽減
   ========================================================= */

@media print {
  .site-header,
  .global-nav,
  .nav-backdrop,
  .breadcrumb,
  .site-footer,
  .page-top {
    display: none !important;
  }

  .main-content {
    padding: 0;
  }

  a {
    color: inherit;
    text-decoration: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}