@charset "UTF-8";

/*!
Theme Name: Cocoon Child
Description: Cocoon専用の子テーマ（教材ページ共通CSS：edu-）
Theme URI: https://wp-cocoon.com/
Author: わいひら
Author URI: https://nelog.jp/
Template:   cocoon-master
Version:    1.1.3
*/

/* =========================================================
  共通テンプレ（Cocoon用 / edu-）完成版（2025-12 / FINAL）
  目的：
  - 教材ページの見た目を “共通CSSだけ” で安定させる
  - ページ固有CSSは最小（例外のみ）
  - 「通常/ワイド」2種類だけを body class で一括制御
  - Cocoonの白キャンバス（content-in）と edu 本体幅を完全連動
  - 危険な全消しリセット（* {margin/padding:0}）は使わない
========================================================= */


/* =========================================================
  1) ルート変数（全ページ共通の基準）
========================================================= */
:root{
  /* 全体フォントスケール：教材は少し大きめが正義 */
  --edu-font-scale: 1.10;

  /* ベース文字サイズ（Cocoonに依存しない） */
  --edu-base: 16px;
  --edu-small: 14px;
  --edu-mini: 13px;

  /* タイトル系 */
  --edu-title: 32px;
  --edu-h2: 20px;
  --edu-h3: 18px;
  --edu-h4: 16px;

  /* ===== 幅（★ここが “通常/ワイド” の単一ソース） ===== */
  --edu-page-max: 980px;          /* 通常 */
  --edu-page-wide: 1200px;        /* ワイド（基本） */
  --edu-page-wide-lg: 1320px;     /* ワイド（大画面） */

  /* 白キャンバス（Cocoonのcontent-in）の “余白込み” 係数 */
  --edu-shell-scale: 1.04;        /* 白キャンバス = 本体×scale */
  --edu-shell-mt: 28px;
  --edu-shell-mb: 36px;

  /* 角丸・影・境界 */
  --edu-radius: 18px;
  --edu-radius-sm: 14px;
  --edu-border: rgba(0,0,0,.10);
  --edu-shadow: 0 10px 30px rgba(0,0,0,.08);

  /* 色（必要ならここを一括で差し替え） */
  --edu-bg: #fff;
  --edu-soft: rgba(0,0,0,.03);
  --edu-soft2: rgba(0,0,0,.06);
  --edu-text: rgba(0,0,0,.86);
  --edu-sub: rgba(0,0,0,.64);

  --edu-accent: rgba(0,120,255,.92);
  --edu-accent2: rgba(0,200,160,.85);

  --edu-warn: rgba(255,180,0,.18);
  --edu-danger: rgba(255,90,0,.18);
  --edu-ok: rgba(0,160,120,.16);

  /* 外側背景（白キャンバスの外） */
  --edu-site-bg: #eaf4ff;

  /* =========================================================
    [FONT FINAL] 教材サイト全体フォント統一（最大700）
  ========================================================= */
  --edu-font-sans: ui-sans-serif, -apple-system, BlinkMacSystemFont,
                   "Segoe UI","Yu Gothic UI","Hiragino Sans","Noto Sans JP",sans-serif;
  --edu-font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas,
                   "Liberation Mono", monospace;
}


/* =========================================================
  2) 教材ページの判定（body class）
========================================================= */

/* 外側（サイト背景） */
body.edu-page{
  background: var(--edu-site-bg) !important;
}

/* ワイド指定：本体幅の単一ソースを上書き */
body.edu-page.edu-page--wide{
  --edu-page-max: var(--edu-page-wide);
}
@media (min-width: 1200px){
  body.edu-page.edu-page--wide{
    --edu-page-max: var(--edu-page-wide-lg);
  }
}


/* =========================================================
  3) Cocoon側の“白キャンバス”（content-in）を統一
========================================================= */
body.edu-page .content-in{
  max-width: calc(var(--edu-page-max) * var(--edu-shell-scale)) !important;
  width: 100% !important;

  margin-left: auto !important;
  margin-right: auto !important;
  margin-top: var(--edu-shell-mt) !important;
  margin-bottom: var(--edu-shell-mb) !important;

  box-sizing: border-box;

  background: rgba(255,255,255,.92) !important;
  border-radius: calc(var(--edu-radius) + 6px);
  box-shadow: 0 14px 44px rgba(0,0,0,.08);

  padding-left: min(18px, 3vw) !important;
  padding-right: min(18px, 3vw) !important;
}

/* Cocoon側の内側幅しばり解除（横だけ） */
body.edu-page .content,
body.edu-page .content-content,
body.edu-page main,
body.edu-page #main,
body.edu-page .main,
body.edu-page .entry-content,
body.edu-page .article,
body.edu-page .article-body{
  max-width: 100% !important;
}

/* 余計な上の余白を詰める（必要なら） */
body.edu-page .entry-title{
  margin-top: 0 !important;
  padding-top: 0 !important;
}


/* =========================================================
  4) edu-wrap（教材の本体）
========================================================= */
.edu-wrap{
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 12px;   /* スマホ左右余白 */
  box-sizing: border-box;
}

/* 旧互換：data-layout="wide" が残っていても崩れない（無処理） */
.edu-wrap[data-layout="wide"]{}


/* =========================================================
  5) edu-reset（教材内だけ / 安全版）
========================================================= */
.edu-wrap,
.edu-wrap *{ box-sizing: border-box; }

.edu-wrap img,
.edu-wrap canvas,
.edu-wrap svg,
.edu-wrap video{
  max-width: 100%;
  height: auto;
}

.edu-wrap p{ margin: 0 0 12px; }
.edu-wrap ul, .edu-wrap ol{ margin: 10px 0 10px 1.2em; }
.edu-wrap li{ margin: 5px 0; }
.edu-wrap hr{ border: none; border-top: 1px solid var(--edu-border); margin: 16px 0; }

/* アンカーで見出しが隠れにくい */
.edu-wrap .edu-anchor{ display:block; height:0; scroll-margin-top: 90px; }


/* =========================================================
  6) 数字・英字（等幅）
========================================================= */
.edu-wrap .edu-mono,
.edu-wrap code,
.edu-wrap pre,
.edu-wrap kbd,
.edu-wrap samp,
.edu-wrap .edu-result,
.edu-wrap .edu-badge .edu-mono,
.edu-wrap .edu-table,
.edu-wrap .edu-chip{
  font-family: var(--edu-font-mono) !important;
  font-weight: 400 !important;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

/* 強調だけは700まで */
.edu-wrap strong,
.edu-wrap b{
  font-weight: 700 !important;
}


/* =========================================================
  7) Hero（ページ冒頭）
========================================================= */
.edu-hero{
  position: relative;
  overflow: hidden;
  border-radius: var(--edu-radius);
  box-shadow: var(--edu-shadow);
  border: 1px solid var(--edu-border);
  margin: 0 0 16px;
  background: var(--edu-bg);
}

/* 背景グラデ */
.edu-hero__bg{
  position:absolute; inset:-40px;
  background:
    radial-gradient(circle at 10% 20%, rgba(0,120,255,.18), transparent 42%),
    radial-gradient(circle at 85% 30%, rgba(255,0,140,.16), transparent 40%),
    radial-gradient(circle at 55% 85%, rgba(0,200,160,.16), transparent 45%),
    linear-gradient(135deg, rgba(0,0,0,.03), rgba(0,0,0,.00));
}

.edu-hero__inner{
  position: relative;
  padding: 20px 18px 16px;
}

/* 旧：バッジ（互換） */
.edu-badge{
  display:inline-flex; gap:8px; align-items:center;
  font-size: calc(12px * var(--edu-font-scale));
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(6px);
  margin: 0 0 10px;
}

/* ===== 新：HERO左上メタ（章 / 節 / 項） ===== */
.edu-heroMeta{
  display:flex;
  align-items:center;
  gap: 10px;
  flex-wrap: wrap;

  margin: 0 0 10px;

  padding: 8px 10px;
  border-radius: 16px;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.78);
  backdrop-filter: blur(6px);
}

/* セクション（色付き四角） */
.edu-heroMeta__sec{
  display:flex;
  align-items:center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(0,120,255,.92), rgba(0,200,160,.70));
  color:#fff;
  border: 1px solid rgba(0,0,0,.06);
  box-shadow: 0 10px 20px rgba(0,0,0,.08);
}
.edu-heroMeta__num{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display:grid;
  place-items:center;
  font-family: var(--edu-font-mono) !important;
  font-weight: 700;
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.25);
}
.edu-heroMeta__label{
  font-size: calc(12px * var(--edu-font-scale));
  letter-spacing: .06em;
  font-weight: 700;
  opacity: .98;
}

/* 節（文字） */
.edu-heroMeta__sub{
  font-size: calc(13px * var(--edu-font-scale));
  color: rgba(0,0,0,.80);
  font-weight: 700;
  padding: 6px 8px;
  border-radius: 12px;
  background: rgba(0,0,0,.03);
  border: 1px solid rgba(0,0,0,.06);
}

/* 項（例：1-5） */
.edu-heroMeta__item{
  font-family: var(--edu-font-mono) !important;
  font-weight: 700;
  font-size: calc(12px * var(--edu-font-scale));
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,.10);
  background: rgba(255,255,255,.86);
}

.edu-title{
  margin: 0;
  font-size: clamp(24px, 2.6vw, var(--edu-title));
  letter-spacing: .02em;
  font-family: var(--edu-font-sans) !important;
  font-weight: 700 !important;
}

.edu-subtitle{
  margin: 8px 0 0;
  color: var(--edu-sub);
  font-size: calc(15px * var(--edu-font-scale));
  font-weight: 500 !important;
}


/* =========================================================
  8) Cards / 見出し
========================================================= */
.edu-card{
  border-radius: var(--edu-radius);
  border: 1px solid var(--edu-border);
  background: var(--edu-bg);
  box-shadow: var(--edu-shadow);

  padding: 16px;
  margin: 0 0 16px;

  display: flow-root;
}
.edu-card__head{ margin: 0 0 12px; }
.edu-card__head > :last-child{ margin-bottom: 0 !important; }
.edu-card__head + *{ margin-top: 0 !important; }

.edu-wrap .edu-h2,
.edu-wrap .edu-h3,
.edu-wrap .edu-h4,
.edu-wrap .edu-card h2,
.edu-wrap .edu-card h3,
.edu-wrap .edu-card h4{
  position: relative;
  margin: 0 0 10px;
  font-family: var(--edu-font-sans) !important;
  font-weight: 700 !important;
  color: rgba(0,90,200,.95);
}

.edu-wrap .edu-h2,
.edu-wrap .edu-card h2{ font-size: calc(var(--edu-h2) * var(--edu-font-scale)); }

.edu-wrap .edu-h3,
.edu-wrap .edu-card h3{ font-size: calc(var(--edu-h3) * var(--edu-font-scale)); }

.edu-wrap .edu-h4,
.edu-wrap .edu-card h4{ font-size: calc(var(--edu-h4) * var(--edu-font-scale)); }

.edu-wrap .edu-h2::after,
.edu-wrap .edu-h3::after,
.edu-wrap .edu-h4::after,
.edu-wrap .edu-card h2::after,
.edu-wrap .edu-card h3::after,
.edu-wrap .edu-card h4::after{
  content:"";
  display:block;
  height: 4px;
  margin-top: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(0,120,255,.95), rgba(0,200,160,.35));
}

.edu-mini{ margin: 4px 0 0; font-size: calc(var(--edu-mini) * var(--edu-font-scale)); color: var(--edu-sub); }
.edu-text{ margin: 0; }

/* 柔らか見出しブロック */
.edu-head--soft{
  padding: 12px 12px;
  border-radius: 16px;
  border: 1px solid var(--edu-border);
  background:
    radial-gradient(circle at 10% 20%, rgba(0,120,255,.10), transparent 55%),
    linear-gradient(180deg, rgba(0,0,0,.02), rgba(0,0,0,0));
}


/* =========================================================
  9) Lead / Tips（導入文 + 小ネタ）
========================================================= */
.edu-lead__text{
  font-size: calc(15px * var(--edu-font-scale));
  margin: 0 0 12px;
  padding: 12px 12px;
  border-radius: 14px;
  background: var(--edu-soft);
  border: 1px solid var(--edu-border);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.edu-lead__tips{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.edu-tip{
  display:flex; gap:10px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.70);
}
.edu-tip__icon{
  width: 34px; height: 34px;
  border-radius: 12px;
  display:flex; align-items:center; justify-content:center;
  background: var(--edu-soft);
  border: 1px solid var(--edu-border);
}
.edu-tip__title{ font-size: calc(12px * var(--edu-font-scale)); color: var(--edu-sub); }
.edu-tip__desc{ font-size: calc(14px * var(--edu-font-scale)); }
.edu-tip--click{ cursor:pointer; }
.edu-tip--click:focus{
  outline:2px solid rgba(0,0,0,.15);
  outline-offset:2px;
  border-radius:12px;
}
@media (max-width: 900px){
  .edu-lead__tips{ grid-template-columns: 1fr; }
}


/* =========================================================
  10) レイアウト（共通グリッド）
========================================================= */
.edu-grid{ display: grid; gap: 12px; }
.edu-grid--2{ grid-template-columns: 1fr 1fr; align-items: start; }
.edu-grid--3{ grid-template-columns: 1fr 1fr 1fr; align-items: start; }
.edu-grid--mainSide{ grid-template-columns: 1fr 1.2fr; align-items: start; }

.edu-wide{ width: 100%; }

.edu-split{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-items: stretch;
}

@media (max-width: 900px){
  .edu-grid--2,
  .edu-grid--3,
  .edu-grid--mainSide,
  .edu-split{
    grid-template-columns: 1fr;
  }
}


/* =========================================================
  11) パネル（中身の箱）
========================================================= */
.edu-panel{
  border-radius: 16px;
  border: 1px solid var(--edu-border);
  background: linear-gradient(180deg, rgba(0,0,0,.02), rgba(0,0,0,.00));
  padding: 14px;
  display: flow-root;
}
.edu-panel > :first-child{ margin-top: 0 !important; }
.edu-panel > :last-child{ margin-bottom: 0 !important; }
.edu-panel__head{ margin-bottom: 10px; }


/* =========================================================
  12) Controls（フォーム共通）
========================================================= */
.edu-controls{ display:flex; flex-direction:column; gap: 10px; }

.edu-row{ display:flex; align-items:center; gap: 10px; flex-wrap: wrap; }
.edu-row--2{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 720px){
  .edu-row--2{ grid-template-columns: 1fr; }
}

.edu-label{
  min-width: 120px;
  font-size: calc(13px * var(--edu-font-scale));
  color: var(--edu-sub);
  font-weight: 500 !important;
}

.edu-input,
.edu-select,
.edu-textbox,
.edu-file{
  width: 100%;
  padding: 11px 11px;
  border-radius: 12px;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.94);
  outline: none;
  font-size: calc(14px * var(--edu-font-scale));
}

.edu-textbox{ min-height: 44px; resize: vertical; }

.edu-input:focus,
.edu-select:focus,
.edu-textbox:focus{
  border-color: rgba(0,120,255,.45);
  box-shadow: 0 0 0 4px rgba(0,120,255,.14);
}

/* range */
.edu-range{ width: 100%; accent-color: #0078ff; }

/* checkbox / radio */
.edu-check,
.edu-radio{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  user-select:none;
  cursor:pointer;
  font-size: calc(14px * var(--edu-font-scale));
}
.edu-check input,
.edu-radio input{
  transform: scale(1.05);
}

/* ファイル入力 */
.edu-fileRow{
  display:flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.edu-file{ padding: 9px 10px; }
.edu-file::-webkit-file-upload-button{
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.88);
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
  margin-right: 10px;
}
.edu-file::-webkit-file-upload-button:hover{
  box-shadow: 0 10px 20px rgba(0,0,0,.10);
}


/* =========================================================
  13) Buttons（共通）
========================================================= */
.edu-actions{
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
  margin-top: 6px;
  align-items: center;
}

.edu-btn{
  appearance:none;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.86);
  border-radius: 14px;
  padding: 10px 12px;
  cursor:pointer;
  font-size: calc(13px * var(--edu-font-scale));
  transition: .15s;
  user-select:none;
}
.edu-btn:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(0,0,0,.10);
}
.edu-btn:active{ transform: translateY(0px); }

.edu-btn--primary{
  background: linear-gradient(135deg, rgba(0,120,255,.92), rgba(0,200,160,.85));
  color: #fff;
  border-color: rgba(0,0,0,.05);
}
.edu-btn--ghost{ background: transparent; }
.edu-btn--danger{
  background: linear-gradient(135deg, rgba(255,90,0,.90), rgba(255,180,0,.85));
  color: #fff;
  border-color: rgba(0,0,0,.05);
}
.edu-btn--soft{ background: rgba(0,0,0,.03); }
.edu-btn[disabled],
.edu-btn.is-disabled{
  opacity: .55;
  pointer-events: none;
  filter: grayscale(0.2);
}

/* セグメント（切替ボタン） */
.edu-seg{
  display:inline-flex;
  border: 1px solid var(--edu-border);
  border-radius: 14px;
  overflow: hidden;
  background: rgba(255,255,255,.80);
}
.edu-seg__btn{
  appearance:none;
  border: 0;
  background: transparent;
  padding: 10px 12px;
  cursor:pointer;
  font-size: calc(13px * var(--edu-font-scale));
  color: rgba(0,0,0,.80);
}
.edu-seg__btn + .edu-seg__btn{ border-left: 1px solid var(--edu-border); }
.edu-seg__btn.is-active{
  background: linear-gradient(135deg, rgba(0,120,255,.92), rgba(0,200,160,.50));
  color: #fff;
  font-weight: 700;
}

/* 〇×（True/False）ボタン */
.edu-tf{ display:inline-flex; gap: 8px; align-items: center; }
.edu-tf__btn{
  min-width: 92px;
  text-align: center;
  border-radius: 999px;
  padding: 10px 14px;
  border: 2px solid rgba(0,0,0,.12);
  background: rgba(255,255,255,.90);
  cursor: pointer;
  font-size: calc(14px * var(--edu-font-scale));
  font-weight: 700;
}
.edu-tf__btn.is-true{ border-color: rgba(0,120,255,.40); }
.edu-tf__btn.is-false{ border-color: rgba(255,90,0,.40); }
.edu-tf__btn.is-active.is-true{
  background: linear-gradient(135deg, rgba(0,120,255,.92), rgba(0,200,160,.55));
  color:#fff;
  border-color: rgba(0,0,0,.05);
}
.edu-tf__btn.is-active.is-false{
  background: linear-gradient(135deg, rgba(255,90,0,.90), rgba(255,180,0,.70));
  color:#fff;
  border-color: rgba(0,0,0,.05);
}


/* =========================================================
  14) Callout（注意・ヒント）
========================================================= */
.edu-callout{
  display:flex;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.88);
  margin: 12px 0;
  align-items: center;
}
.edu-callout__icon{
  width: 34px; height: 34px;
  border-radius: 12px;
  display:grid;
  place-items:center;
  font-size: 18px;
  background: rgba(0,0,0,.04);
  border: 1px solid var(--edu-border);
  flex-shrink: 0;
}
.edu-callout__body{
  font-size: calc(14px * var(--edu-font-scale));
  color: rgba(0,0,0,.78);
}
.edu-callout--info{ background: linear-gradient(180deg, rgba(0,120,255,.10), rgba(255,255,255,.92)); }
.edu-callout--warn{ background: linear-gradient(180deg, rgba(255,180,0,.14), rgba(255,255,255,.92)); }
.edu-callout--danger{ background: linear-gradient(180deg, rgba(255,90,0,.18), rgba(255,255,255,.92)); }
.edu-callout--good{ background: linear-gradient(180deg, rgba(0,200,160,.16), rgba(255,255,255,.92)); }


/* =========================================================
  15) Step（確認手順 / ふりかえり）
========================================================= */
.edu-step{ margin: 12px 0 0; }

.edu-step__list{
  list-style: none !important;
  padding-left: 0 !important;
  margin: 0 !important;
  display: grid;
  gap: 10px;
}
.edu-step__list > li{ list-style: none !important; }

.edu-step__item{
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 10px;
  padding: 12px 12px;
  border-radius: 16px;
  border: 1px solid var(--edu-border);
  background: linear-gradient(180deg, rgba(0,0,0,.02), rgba(0,0,0,.00));
  position: relative;
  overflow: hidden;
}

.edu-step__no{
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: calc(14px * var(--edu-font-scale));
  background: rgba(255,255,255,.86);
  border: 1px solid var(--edu-border);
  box-shadow: 0 10px 22px rgba(0,0,0,.10);
}

.edu-step__title{
  margin: 0;
  font-size: calc(15px * var(--edu-font-scale));
  letter-spacing: .01em;
  color: rgba(0,90,200,.95);
  font-weight: 700;
}
.edu-step__desc{
  margin: 6px 0 0;
  font-size: calc(14px * var(--edu-font-scale));
  color: var(--edu-sub);
}
@media (max-width: 600px){
  .edu-step__item{ grid-template-columns: 40px 1fr; }
  .edu-step__no{ width:40px; height:40px; border-radius: 12px; }
}


/* =========================================================
  16) Table（表）
========================================================= */
.edu-tableWrap{
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 16px;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.92);
}
.edu-table{
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: calc(14px * var(--edu-font-scale));
  overflow: hidden;
}
.edu-table th,
.edu-table td{
  padding: 10px 10px;
  border-bottom: 1px solid var(--edu-border);
  text-align: center;
  vertical-align: middle;
}
.edu-table th{
  background: rgba(0,0,0,.04);
  font-weight: 700;
}
.edu-table tr:last-child td{ border-bottom: none; }

.edu-table.is-left th,
.edu-table.is-left td{ text-align: left; }

.edu-table .is-mono{ font-family: var(--edu-font-mono) !important; }

.edu-cell--warn{ background: rgba(255,180,0,.18); }
.edu-cell--danger{ background: rgba(255,90,0,.14); }
.edu-cell--ok{ background: rgba(0,200,160,.14); }

.edu-pill{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.90);
  font-weight: 700;
  font-size: calc(12px * var(--edu-font-scale));
  white-space: nowrap;
}
.edu-pill--ok{
  border-color: rgba(0,120,255,.35);
  background: linear-gradient(135deg, #e7f1ff, #d6e9ff);
  color: #0b63d1;
}
.edu-pill--ng{
  border-color: rgba(255,90,0,.30);
  background: linear-gradient(135deg, #ffe8ea, #ffd6db);
  color: #b40018;
}


/* =========================================================
  17) Figure / Image / Graph / Chart（図・画像・グラフ）
========================================================= */
.edu-figure{
  margin: 12px 0;
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.86);
}
.edu-figure__media{
  display:block;
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(0,0,0,.10);
  background: rgba(0,0,0,.02);
}
.edu-figure__caption{
  margin: 10px 0 0;
  font-size: calc(13px * var(--edu-font-scale));
  color: var(--edu-sub);
}
.edu-chart{
  width: 100%;
  border-radius: 16px;
  border: 1px solid rgba(0,0,0,.10);
  background: rgba(255,255,255,.92);
  padding: 10px;
}


/* =========================================================
  18) Audio / Video（音声・動画）
========================================================= */
.edu-audio,
.edu-video{
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(0,0,0,.12);
  background: rgba(255,255,255,.92);
  padding: 8px;
}


/* =========================================================
  19) Code（コード例）
========================================================= */
.edu-code{
  margin: 12px 0;
  border-radius: 16px;
  border: 1px solid rgba(0,0,0,.12);
  background: rgba(0,0,0,.03);
  overflow: hidden;
}
.edu-code pre{
  margin: 0;
  padding: 12px 12px;
  overflow-x: auto;
  font-size: calc(13px * var(--edu-font-scale));
  line-height: 1.6;
}
.edu-code code{
  font-family: var(--edu-font-mono) !important;
}

/* インラインcode */
.edu-wrap code{
  padding: 0.12em 0.35em;
  border-radius: 10px;
  border: 1px solid rgba(0,0,0,.10);
  background: rgba(0,0,0,.03);
  font-size: 0.95em;
}


/* =========================================================
  20) Navigation（下ナビ：共通）
========================================================= */
.edu-nav{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items:center;
  justify-content: space-between;
  margin: 14px 0;
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.88);
  box-shadow: 0 10px 22px rgba(0,0,0,.06);
}
.edu-nav__group{
  display:flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items:center;
}
.edu-nav__btn{
  appearance: none;
  text-decoration: none !important;
  border: 1px solid var(--edu-border);
  background: rgba(255,255,255,.92);
  color: rgba(0,0,0,.82);
  border-radius: 14px;
  padding: 10px 12px;
  font-size: calc(13px * var(--edu-font-scale));
  line-height: 1.2;
  cursor: pointer;
  display:inline-flex;
  align-items:center;
  gap: 8px;
  transition: .15s;
  user-select: none;
}
.edu-nav__btn:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(0,0,0,.10);
}
.edu-nav__btn:active{ transform: translateY(0); }

.edu-nav__btn--primary{
  background: linear-gradient(135deg, var(--edu-accent), var(--edu-accent2));
  color: #fff;
  border-color: rgba(0,0,0,.05);
}
.edu-nav__btn--ghost{ background: transparent; }
.edu-nav__btn--danger{
  background: linear-gradient(135deg, rgba(255,90,0,.90), rgba(255,180,0,.85));
  color: #fff;
  border-color: rgba(0,0,0,.05);
}
.edu-nav__btn[disabled],
.edu-nav__btn.is-disabled{
  opacity: .55;
  pointer-events: none;
  filter: grayscale(0.2);
}

/* “トップへ戻る” は教材側で隠す（スクロールTOPを消すだけ） */
.edu-wrap .edu-nav__btn--top,
.edu-wrap .edu-nav__btn[data-role="top"],
.edu-wrap .edu-nav__btn[data-action="top"]{
  display:none !important;
}
@media (max-width: 700px){
  .edu-nav{
    flex-direction: column;
    align-items: stretch;
  }
  .edu-nav__group{ justify-content: center; }
}


/* =========================================================
  21) Parity / Bit UI（共通部品）
========================================================= */
.edu-bits{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  justify-content:flex-start;
  align-items:center;
  padding: 10px 0;
}
.edu-bits.is-center{ justify-content:center; }

.edu-bit{
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 2px solid rgba(0,0,0,.22);
  background: #fff;
  font-weight: 700;
  user-select: none;
  cursor: pointer;

  display:flex;
  align-items:center;
  justify-content:center;
  line-height: 1;

  font-family: var(--edu-font-mono) !important;
}
.edu-bit.is-1{
  background: linear-gradient(135deg, #1e66ff, #19b7ff);
  color:#fff;
  border-color: rgba(0,0,0,.10);
}

.edu-parityBadge{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 14px;
  border: 1px solid rgba(0,0,0,.12);
  background: rgba(255,255,255,.86);
}
.edu-parityBadge__label{
  font-size: calc(12px * var(--edu-font-scale));
  color: var(--edu-sub);
  font-weight: 700;
}
.edu-parityBadge__value{
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family: var(--edu-font-mono) !important;
  font-weight: 700;
  border: 2px solid rgba(0,0,0,.14);
  background: rgba(0,200,160,.16);
}

.edu-resultBox{
  margin-top: 8px;
  padding: 12px 12px;
  border-radius: 14px;
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(0,0,0,.12);
  font-family: var(--edu-font-mono) !important;
  white-space: nowrap;
  overflow-x:auto;
}
@media (max-width: 520px){
  .edu-bit{ width: 38px; height: 38px; border-radius: 10px; }
  .edu-resultBox{ white-space: normal; word-break: break-word; }
}


/* =========================================================
  22) edu-quiz（練習問題の共通部品：最低限）
========================================================= */
.edu-quiz{ display:block; }
.edu-quiz__head{ margin: 0 0 10px; }
.edu-quiz__body{ margin: 0; }

.edu-quiz__q{
  margin: 0 0 10px;
  font-size: calc(15px * var(--edu-font-scale));
  color: rgba(0,0,0,.86);
}

.edu-quiz__answerRow{
  display:flex;
  align-items:center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 8px 0 0;
}

.edu-quiz__input{
  width: min(420px, 100%);
  padding: 11px 11px;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,.14);
  background: rgba(255,255,255,.94);
  font-size: calc(14px * var(--edu-font-scale));
  outline: none;
}
.edu-quiz__input:focus{
  border-color: rgba(0,120,255,.45);
  box-shadow: 0 0 0 4px rgba(0,120,255,.14);
}

.edu-quiz__btn{
  appearance:none;
  border: 1px solid rgba(0,0,0,.14);
  background: rgba(255,255,255,.92);
  border-radius: 12px;
  padding: 9px 12px;
  min-height: 40px;
  cursor:pointer;
  font-size: calc(13px * var(--edu-font-scale));
  font-weight: 700;
}
.edu-quiz__btn:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(0,0,0,.10);
}
.edu-quiz__btn:active{ transform: translateY(0); }

.edu-quiz__btn--primary{
  background: linear-gradient(135deg, rgba(0,120,255,.92), rgba(0,200,160,.70));
  color:#fff;
  border-color: rgba(0,0,0,.06);
}

.edu-quiz__result{
  margin: 10px 0 0;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(0,0,0,.10);
  background: rgba(0,0,0,.02);
}


/* =========================================================
  23) Cocoon見出し装飾を edu 内だけ無効化
========================================================= */
.edu-wrap h1,
.edu-wrap h2,
.edu-wrap h3,
.edu-wrap h4,
.edu-wrap h5{
  background-image: none !important;
  box-shadow: none !important;
  border-bottom: none !important;
}


/* =========================================================
  24) モーダル（必要最低限の共通）
========================================================= */
.edu-modal{ display:none; }
.edu-modal.is-open{ display:block; }
.edu-modal__overlay{
  position:fixed; inset:0;
  background:rgba(0,0,0,.45);
  z-index:9998;
}
.edu-modal__panel{
  position:fixed;
  left:50%; top:50%;
  transform:translate(-50%,-50%);
  width:min(720px, 92vw);
  max-height:80vh;
  overflow:auto;
  background:#fff;
  border-radius:16px;
  z-index:9999;
  box-shadow:0 18px 60px rgba(0,0,0,.25);
}
.edu-modal__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 16px;
  border-bottom:1px solid rgba(0,0,0,.08);
}
.edu-modal__title{ font-weight:900; font-size: calc(15px * var(--edu-font-scale)); }
.edu-modal__close{
  width:38px; height:38px;
  border-radius:12px;
  border:1px solid rgba(0,0,0,.12);
  background:#fff;
  cursor:pointer;
  font-size:20px;
  line-height:1;
}
.edu-modal__body{ padding:14px 16px; }
.edu-modal__foot{
  padding:14px 16px;
  border-top:1px solid rgba(0,0,0,.08);
  text-align:right;
}


/* =========================================================
  25) 旧互換（最低限）
========================================================= */
.edu-unit{
  max-width: 900px;
  margin: 0 auto 3em;
  line-height: 1.8;
}
.edu-lead{
  background: #eef5ff;
  padding: 1.5em;
  border-left: 6px solid #4a76d1;
  margin-bottom: 2em;
}
.edu-block{ margin-bottom: 2em; }
.edu-summary{
  background: #f8f8f8;
  padding: 1.2em;
  border-radius: 8px;
}


/* =========================================================
  26) Cocoon「トップへ戻る」：青い丸だけ残し、黒い四角排除
========================================================= */
#page_top,
.page_top_btn{ display: none !important; }

#go-to-top{
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}
#go-to-top .go-to-top-button{
  width: 44px !important;
  height: 44px !important;
  padding: 0 !important;
  border-radius: 999px !important;

  background: #2ea7ff !important;
  border: none !important;
  box-shadow: 0 10px 22px rgba(0,0,0,.12) !important;

  display: grid !important;
  place-items: center !important;

  color: #fff !important;
}
#go-to-top .go-to-top-button::before,
#go-to-top .go-to-top-button::after{
  content: none !important;
}
#go-to-top .go-to-top-button .fa,
#go-to-top .go-to-top-button svg{
  color: #fff !important;
}


/* =========================================================
  27) 総合TOP：章カード（章だけ選択）
========================================================= */
.toc-top__chapters-only .toc-chapters{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0;
}
@media (max-width: 720px){
  .toc-top__chapters-only .toc-chapters{
    grid-template-columns: 1fr;
  }
}
.toc-top__chapters-only .toc-chapters__li{
  list-style: none;
  margin: 0;
  padding: 0;
}
.toc-top__chapters-only .toc-chapters__btn{
  display: block;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(0,0,0,.10);
  background: rgba(255,255,255,.92);
  text-decoration: none !important;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.toc-top__chapters-only .toc-chapters__btn:hover{
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(0,0,0,.08);
  border-color: rgba(0,0,0,.16);
}
.toc-top__chapters-only .toc-chapters__title{
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.25;
  color: rgba(0,0,0,.88);
}
.toc-top__chapters-only .toc-chapters__desc{
  margin-top: 6px;
  font-size: .92rem;
  line-height: 1.45;
  color: rgba(0,0,0,.62);
}

/* =========================================================
  edu-footNav（フッター3分割ナビ）【最終版 / 重複ゼロ】
  - 左：前 / 中：章トップ / 右：次
  - 文字：フッター内は全て黒（灰色禁止）
  - font-weight：400固定（ガタガタ防止）
  - 章TOP：アイコン/章バッジ無し、赤ピンク塗りつぶし
========================================================= */


/* =========================================================
  1) 本体（レイアウト）
========================================================= */
.edu-footNav{
  width: 100%;
  margin: 18px auto 0;
  padding: 12px 14px;
  box-sizing: border-box;

  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 14px;
}

/* edu-wrap 内ではカード化 */
.edu-wrap .edu-footNav{
  max-width: 100%;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 14px;
  background: rgba(255,255,255,.90);
  box-shadow: 0 10px 24px rgba(0,0,0,.06);
}


/* =========================================================
  2) セル（左右 / 中央）
========================================================= */
.edu-footNav__cell{
  display: flex;
  align-items: center;
  min-width: 0;
}
.edu-footNav__cell.is-left{  justify-self: start;  padding-left: 4px; }
.edu-footNav__cell.is-center{justify-self: center; }
.edu-footNav__cell.is-right{ justify-self: end;    padding-right: 4px; }


/* =========================================================
  3) 中央スタック（章トップ＋actions）
========================================================= */
.edu-footNav__centerStack{
  display: grid;
  justify-items: center;
  gap: 8px;
  width: 100%;
}


/* =========================================================
  4) フッター内の文字ルール（灰色禁止）
========================================================= */
.edu-footNav,
.edu-footNav *{
  color: #000;
  font-weight: 400;
  opacity: 1;
  filter: none;
  text-shadow: none;
}


/* =========================================================
  5) 共通ボタン（Prev / Next / Top）
========================================================= */
.edu-footNav__btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;

  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,.10);
  background: #fff;

  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
  box-shadow: 0 6px 14px rgba(0,0,0,.05);

  font-size: 1rem;     /* 前/次/章TOP 文字サイズ統一 */
  font-weight: 400;    /* 太字禁止 */
}

/* テキスト（長文暴走防止） */
.edu-footNav__text{
  display: inline-block;
  max-width: 46vw;
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: middle;

  font-size: inherit;
  font-weight: 400;
}


/* =========================================================
  6) 前/次（薄青ボタン：スクショ準拠）
========================================================= */
.edu-footNav__btn.is-prev,
.edu-footNav__btn.is-next{
  background: rgba(0,140,255,.06);
  border-color: rgba(0,140,255,.25);
  box-shadow: none;
}
.edu-footNav__btn.is-prev:hover,
.edu-footNav__btn.is-next:hover{
  background: rgba(0,140,255,.12);
  border-color: rgba(0,140,255,.35);
}


/* =========================================================
  7) 章TOP（アイコン/章バッジ無し・赤ピンク塗りつぶし）
========================================================= */

/* 章TOPに混入しがちな要素は消す（JSが出しても無効化） */
.edu-footNav__btn.is-top .edu-footNav__icon,
.edu-footNav__btn.is-top .edu-footNav__topIcon,
.edu-footNav__btn.is-top .edu-footNav__topBadge{
  display: none !important;
}
/* 疑似要素で出るアイコンも殺す */
.edu-footNav__btn.is-top::before,
.edu-footNav__btn.is-top::after{
  content: none !important;
  display: none !important;
}

/* 章TOP本体：塗りつぶし＋黒文字（太字なし） */
.edu-footNav__btn.is-top{
  background: rgba(235, 70, 120, .22);
  border: 1px solid rgba(235, 70, 120, .65);
  box-shadow: none;
}
.edu-footNav__btn.is-top:hover{
  background: rgba(235, 70, 120, .30);
  border-color: rgba(235, 70, 120, .78);
}


/* =========================================================
  8) actions（保存 / 送信など）
========================================================= */
.edu-footNav__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  align-items: center;
}
.edu-footNav__actBtn{
  padding: 9px 12px;
  border-radius: 14px;
  min-height: 40px;
}


/* =========================================================
  9) disabled（必要なら後で“薄く”に変更可）
  ※ まずは「文字が薄い」事故を防ぐため黒固定のまま
========================================================= */
.edu-footNav .is-disabled{
  pointer-events: none;
}


/* =========================================================
  10) レスポンシブ（縦積み）
========================================================= */
@media (max-width: 900px){
  .edu-footNav{
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .edu-footNav__cell{
    justify-self: stretch;
    justify-content: center;
    padding-left: 0;
    padding-right: 0;
  }
  .edu-footNav__btn{
    width: 100%;
    justify-content: center;
  }
  .edu-footNav__text{
    max-width: 78vw;
  }
}
/* =========================================================
  FIX: 章TOPだけ文字が違う問題を強制統一（最終）
  - 前/次と同じ「黒・同サイズ・太字なし」に固定
========================================================= */
.edu-footNav__btn.is-top,
.edu-footNav__btn.is-top *{
  color: #000 !important;
  font-size: 1rem !important;
  font-weight: 400 !important;   /* 太字禁止 */
  opacity: 1 !important;
  filter: none !important;
  text-shadow: none !important;
  letter-spacing: normal !important;
}

/* 念押し：テキストspanが別クラスでも黒固定 */
.edu-footNav__btn.is-top .edu-footNav__text{
  color: #000 !important;
  font-size: 1rem !important;
  font-weight: 400 !important;
  opacity: 1 !important;
}
/* =========================================================
  FIX: edu-footNav を “本体(.edu-wrap) と同じ幅” に揃える
  - .edu-wrap 内/外どちらに挿入されても幅が一致する
========================================================= */

/* フッターの最大幅を “教材本体幅” に固定 */
.edu-footNav{
  max-width: var(--edu-page-max);
  margin-left: auto;
  margin-right: auto;
}

/* もし .edu-wrap 外に刺さっていた場合も左右余白を本体と同じにする */
body.edu-page .entry-content > .edu-footNav,
body.edu-page article > .edu-footNav,
body.edu-page main > .edu-footNav{
  padding-left: 12px;
  padding-right: 12px;
  box-sizing: border-box;
}

/* .edu-wrap 内にあるときは、.edu-wrap の内側幅に自然に追従 */
.edu-wrap .edu-footNav{
  max-width: 100%;
  padding-left: 14px;  /* あなたの現行のカード内余白 */
  padding-right: 14px;
}
/* FIX: inline max-width:980px をCSSで無効化して edu-wrap 幅に揃える */
#color-mixer-suite{
  max-width: 100% !important;
  margin: 0 !important;          /* 0 auto を殺す */
}

/* =========================================
  edu-mono：数値・コード・ビット列用
  - 学習用途のため「幅が揃う」ことを最優先
========================================= */
.edu-mono,
code,
pre,
.bin-mono{
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 400;
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-synthesis: none; /* 疑似太字/斜体を作らせない */
}