/* =========================================================
   原田英語の次期学習指導要領ナビ — style.css
   落ち着いたデザイン：方眼紙の背景・黒板グリーンのトップ・細い線・影なし
   ========================================================= */

/* hidden 属性は display を指定した要素（.card など）にも必ず効かせる（絞り込み・タブ用） */
[hidden] { display: none !important; }

:root {
  --bg: #fbfaf6;
  --bg2: #f3f1ea;
  --card: #ffffff;
  --ink: #1f2421;
  --ink2: #5b625d;
  --ink3: #8a908b;
  --line: #dedbd1;
  --line2: #c4c0b4;
  --ink-fixed: #1f2421;
  --grid: rgba(31, 74, 60, 0.055);
  --board: #1f4a3c;
  --board2: #173a2f;
  --chalk: #f3f1e9;
  --chalk2: #c9d6cf;
  --chalk-y: #f0d77a;
  --accent: #1f4a3c;
  --link: #22598a;
  --sho: #a8553e;
  --chu: #2d5e8c;
  --ko: #3d7653;
  --all: #6b5a8a;
  /* 旧デザインの色名（インラインで使っている所があるので落ち着いた色に置きかえる） */
  --pop: #f0d77a;
  --pink: #a8553e;
  --blue: #2d5e8c;
  --green: #3d7653;
  --red: #a8553e;
  --orange: #b7793a;
  --purple: #6b5a8a;
  --mark: #f6e7ae;
  --mark-new: #d8ecdf;
  --mark-old: #f3dcd6;
  --shadow: none;
  --shadow-lg: none;
  --r: 12px;
  --r-sm: 8px;
  --font: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic UI', Meiryo, system-ui, sans-serif;
  --head: 'Zen Maru Gothic', 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  --display: var(--head);
  --header-h: 60px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #141816; --bg2: #1a1f1c; --card: #1d2320; --ink: #e9ece8; --ink2: #aab3ad; --ink3: #7d867f; --line: #2f3833; --line2: #46514a;
    --grid: rgba(201, 214, 207, 0.04); --link: #8fb7da; --mark: #5a4f22; --mark-new: #1f4a35; --mark-old: #5a2f27;
    --sho: #d48b74; --chu: #7fa8d1; --ko: #86bb97; --all: #a99bc6; --accent: #86bb97;
    color-scheme: dark;
  }
}
:root[data-theme='dark'] {
  --bg: #141816; --bg2: #1a1f1c; --card: #1d2320; --ink: #e9ece8; --ink2: #aab3ad; --ink3: #7d867f; --line: #2f3833; --line2: #46514a;
  --grid: rgba(201, 214, 207, 0.04); --link: #8fb7da; --mark: #5a4f22; --mark-new: #1f4a35; --mark-old: #5a2f27;
  --sho: #d48b74; --chu: #7fa8d1; --ko: #86bb97; --all: #a99bc6; --accent: #86bb97;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0; color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.9; letter-spacing: 0.03em;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
  background-color: var(--bg);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
}
img, svg { max-width: 100%; }
a { color: inherit; }
a.link, .prose a { color: var(--link); text-underline-offset: 3px; text-decoration-thickness: 1px; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, h4 { font-family: var(--head); font-weight: 700; line-height: 1.5; letter-spacing: 0.04em; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; border-radius: 4px; }
.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.wrap-narrow { width: min(800px, 100% - 32px); margin-inline: auto; }
.center { text-align: center; }
.muted { color: var(--ink2); }
.small { font-size: 13px; }
.nowrap { white-space: nowrap; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--card); color: var(--ink); padding: 8px 14px; border-radius: 6px; border: 1px solid var(--line2); }
.skip:focus { left: 8px; }
img.ico { display: none; }

/* ---------- 読書プログレス ---------- */
.progress { position: fixed; inset: 0 0 auto 0; height: 2px; z-index: 70; pointer-events: none; }
.progress span { display: block; height: 100%; transform-origin: left; transform: scaleX(var(--p, 0)); background: var(--chalk-y); }

/* ---------- お知らせバー ---------- */
.notice-bar { background: var(--board2); color: var(--chalk); font-size: 13px; }
.notice-bar a { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 6px 12px; text-decoration: none; text-align: center; flex-wrap: wrap; }
.notice-bar .tag { border: 1px solid var(--chalk2); color: var(--chalk); border-radius: 4px; padding: 0 6px; font-size: 11.5px; letter-spacing: .08em; }
.notice-bar b { color: var(--chalk-y); font-weight: 700; }
.notice-bar .go { text-decoration: underline; text-underline-offset: 3px; color: var(--chalk2); }

/* ---------- ヘッダー ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 94%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; gap: 14px; height: var(--header-h); }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; min-width: 0; }
.logo-mark { width: 36px; height: 36px; border-radius: 8px; background: var(--board); color: var(--chalk); display: grid; place-items: center; font-family: var(--head); font-weight: 700; font-size: 18px; line-height: 1; flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.logo-text small { font-size: 10.5px; color: var(--ink2); letter-spacing: .06em; }
.logo-text strong { font-family: var(--head); font-weight: 700; font-size: 17px; letter-spacing: .05em; white-space: nowrap; }
.logo-text strong em { font-style: normal; color: var(--accent); }
.main-nav { display: flex; gap: 0; margin-left: auto; }
.main-nav a { text-decoration: none; font-size: 14px; padding: 6px 10px; white-space: nowrap; color: var(--ink2); border-bottom: 2px solid transparent; }
.main-nav a:hover { color: var(--ink); }
.main-nav a.on { color: var(--ink); border-bottom-color: var(--board); }
.main-nav a .lvdot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 5px; vertical-align: 1px; }
.header-tools { display: flex; gap: 6px; margin-left: 4px; }
.icon-btn { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 8px; border: 1px solid var(--line); background: var(--card); padding: 0; }
.icon-btn:hover { border-color: var(--line2); }
.icon-btn svg { width: 18px; height: 18px; }
.burger { gap: 4px; display: grid; align-content: center; justify-items: center; }
.burger span { display: block; width: 16px; height: 1.5px; background: var(--ink); border-radius: 2px; transition: transform .2s, opacity .2s; }
body.menu-open .burger span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
body.menu-open .burger span:nth-child(2) { opacity: 0; }
body.menu-open .burger span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }
.search-btn { display: flex; align-items: center; gap: 6px; height: 38px; padding: 0 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); font-size: 13px; color: var(--ink2); }
.search-btn svg { width: 16px; height: 16px; }
@media (max-width: 1180px) { .main-nav { display: none; } .header-tools { margin-left: auto; } }
@media (max-width: 560px) { .search-btn span { display: none; } .search-btn { width: 38px; padding: 0; justify-content: center; } .logo-text small { display: none; } .logo-text strong { font-size: 15px; } }

/* ---------- 校種のサブナビ（ヘッダー下） ---------- */
.lv-bar { border-bottom: 1px solid var(--line); background: var(--card); }
.lv-bar .wrap { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.lv-bar a { flex-shrink: 0; text-decoration: none; font-size: 13.5px; padding: 8px 12px; color: var(--ink2); border-bottom: 2px solid transparent; white-space: nowrap; }
.lv-bar a:hover { color: var(--ink); }
.lv-bar a.on { color: var(--ink); border-bottom-color: currentColor; }
.lv-bar a i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; vertical-align: 0; }

/* ---------- ドロワー ---------- */
.drawer-bg { position: fixed; inset: 0; background: rgba(15, 20, 18, .35); opacity: 0; pointer-events: none; transition: opacity .25s; z-index: 80; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(380px, 92vw); background: var(--bg); border-left: 1px solid var(--line); z-index: 90; transform: translateX(100%); transition: transform .28s ease; overflow-y: auto; padding: 0 20px 40px; }
body.menu-open .drawer { transform: none; }
body.menu-open .drawer-bg { opacity: 1; pointer-events: auto; }
body.menu-open { overflow: hidden; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); position: sticky; top: 0; background: var(--bg); z-index: 1; }
.drawer-head strong { font-family: var(--head); }
.drawer h3 { font-size: 12px; letter-spacing: .12em; color: var(--ink3); margin: 22px 0 6px; font-family: var(--font); font-weight: 500; }
.drawer ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.drawer a { display: flex; align-items: center; gap: 10px; padding: 10px 4px; text-decoration: none; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.drawer a:hover, .drawer a.on { color: var(--accent); }
.drawer a .em { display: none; }
.drawer .search-row { margin-top: 4px; }

/* ---------- 検索 ---------- */
.search-wrap { position: relative; }
.search-box { display: flex; align-items: center; gap: 8px; background: var(--card); border: 1px solid var(--line2); border-radius: 10px; padding: 0 14px; }
.search-box input { flex: 1; border: 0; background: transparent; font: inherit; color: inherit; padding: 11px 0; outline: none; min-width: 0; }
.search-box svg { width: 18px; height: 18px; color: var(--ink3); flex-shrink: 0; }
.search-results { list-style: none; margin: 6px 0 0; padding: 0; }
.search-results:empty { display: none; }
.search-results li { border-bottom: 1px solid var(--line); }
.search-results a { display: block; padding: 10px 4px; text-decoration: none; }
.search-results a b { display: block; font-size: 14.5px; }
.search-results a span { display: block; font-size: 12.5px; color: var(--ink2); }
.search-results mark { background: var(--mark); color: inherit; }
.home-search .search-box { padding: 2px 16px; }

/* ---------- パンくず ---------- */
.crumbs { font-size: 12.5px; color: var(--ink2); padding-top: 14px; }
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; }
.crumbs li + li::before { content: '›'; margin: 0 8px; color: var(--ink3); }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

/* ---------- 黒板のトップ ---------- */
.hero { background: var(--board); color: var(--chalk); position: relative; overflow: hidden; border-bottom: 6px solid #8a6d4a; }
.hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 20% 0%, rgba(255,255,255,.07), transparent 60%), radial-gradient(ellipse at 90% 100%, rgba(0,0,0,.18), transparent 55%); pointer-events: none; }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; padding: 56px 0 52px; }
.hero .kicker { color: var(--chalk2); border-color: rgba(243,241,233,.35); }
.hero h1 { font-size: clamp(30px, 4.6vw, 50px); margin: 14px 0 16px; letter-spacing: .06em; line-height: 1.35; font-weight: 700; }
.hero h1 .hl { color: var(--chalk-y); }
.hero h1 .pk { color: var(--chalk); border-bottom: 3px solid var(--chalk-y); }
.hero .lead { color: var(--chalk2); font-size: 16px; max-width: 34em; margin: 0 0 22px; }
.hero .lead b { color: var(--chalk); font-weight: 500; }
.hero-art img { width: 100%; height: auto; border-radius: 10px; display: block; opacity: .96; }
.hero .cta-row .btn { background: transparent; color: var(--chalk); border-color: rgba(243,241,233,.45); }
.hero .cta-row .btn:hover { background: rgba(243,241,233,.08); border-color: var(--chalk); }
.hero .cta-row .btn.pop { background: var(--chalk); color: var(--board2); border-color: var(--chalk); }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; padding: 36px 0 34px; gap: 24px; } }

/* 黒板の校種セレクター（トップ） */
.lv-pick { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 8px; }
.lv-pick a { display: block; text-decoration: none; padding: 14px 16px 12px; border: 1px solid rgba(243,241,233,.3); border-radius: 10px; color: var(--chalk); transition: background .2s, border-color .2s; }
.lv-pick a:hover { background: rgba(243,241,233,.07); border-color: rgba(243,241,233,.7); }
.lv-pick b { display: block; font-family: var(--head); font-size: 18px; letter-spacing: .08em; }
.lv-pick small { display: block; color: var(--chalk2); font-size: 12px; line-height: 1.6; margin-top: 2px; }
.lv-pick a::after { content: '→'; display: block; color: var(--chalk-y); font-size: 13px; margin-top: 6px; }
@media (max-width: 760px) { .lv-pick { grid-template-columns: 1fr 1fr; } }

/* ---------- 共通パーツ ---------- */
.kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; letter-spacing: .1em; color: var(--ink2); border: 1px solid var(--line2); border-radius: 999px; padding: 2px 12px; }
.kicker .dot { display: none; }
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 18px; border-radius: 8px; border: 1px solid var(--line2); background: var(--card); color: var(--ink); text-decoration: none; font-size: 14.5px; line-height: 1.4; transition: border-color .2s, background .2s; }
.btn:hover { border-color: var(--ink2); }
.btn.pop, .btn.blue { background: var(--board); color: var(--chalk); border-color: var(--board); }
.btn.pop:hover, .btn.blue:hover { background: var(--board2); }
.btn.pink { border-color: var(--line2); }
.btn.sm { padding: 5px 12px; font-size: 13px; }

.sec { padding: 56px 0; }
.sec-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 22px; flex-wrap: wrap; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.sec-title { font-size: clamp(21px, 2.6vw, 27px); margin: 0; }
.sec-title .pk, .sec-title .bl { color: inherit; }
.sec-sub { margin: 4px 0 0; color: var(--ink2); font-size: 14px; }
.more { font-size: 14px; color: var(--link); text-decoration: none; white-space: nowrap; }
.more:hover { text-decoration: underline; }
.band { background: color-mix(in srgb, var(--bg2) 85%, transparent); border-block: 1px solid var(--line); }

.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 900px) { .g3, .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .g2, .g3, .g4 { grid-template-columns: 1fr; } }
.grid.tight { gap: 10px; }

.card { display: block; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; text-decoration: none; position: relative; }
a.card { transition: border-color .2s; }
a.card:hover { border-color: var(--ink3); }
a.card:hover h3 { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.card .em { display: none; }
.card h3 { margin: 6px 0 6px; font-size: 17px; }
.card p { margin: 0 0 6px; font-size: 14px; color: var(--ink2); line-height: 1.8; }
.card .go { display: inline-block; margin-top: 6px; font-size: 13px; color: var(--link); }
.card .go::after { content: ' →'; }
.card.accent { border-top: 3px solid var(--c, var(--board)); }
.card .thumb { display: block; width: calc(100% + 40px); max-width: none; margin: -20px -20px 14px; aspect-ratio: 3 / 2; object-fit: cover; border-radius: var(--r) var(--r) 0 0; border-bottom: 1px solid var(--line); height: auto; }
.card-icon { display: none; }
.card.lv-sho { border-top: 3px solid var(--sho); }
.card.lv-chu { border-top: 3px solid var(--chu); }
.card.lv-ko { border-top: 3px solid var(--ko); }
.card.lv-all { border-top: 3px solid var(--all); }

.chip { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; line-height: 1.5; padding: 1px 8px; border-radius: 4px; border: 1px solid var(--line2); color: var(--ink2); background: var(--card); text-decoration: none; white-space: nowrap; font-weight: 400; }
.chip.pop { border-color: var(--board); color: var(--board); }
.chip.pk, .chip.lv-sho { border-color: var(--sho); color: var(--sho); }
.chip.bl, .chip.lv-chu { border-color: var(--chu); color: var(--chu); }
.chip.gr, .chip.lv-ko { border-color: var(--ko); color: var(--ko); }
.chip.lv-all { border-color: var(--all); color: var(--all); }
a.chip:hover { border-color: var(--ink2); color: var(--ink); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0; }

.three { list-style: none; counter-reset: t; margin: 0; padding: 0; display: grid; gap: 10px; }
.three li { counter-increment: t; position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 14px 16px 14px 56px; }
.three li::before { content: counter(t); position: absolute; left: 16px; top: 13px; width: 26px; height: 26px; border-radius: 50%; background: var(--board); color: var(--chalk); display: grid; place-items: center; font-size: 13px; font-family: var(--head); }

/* ---------- ニュース ---------- */
.news { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.news li { padding: 16px 2px; border-bottom: 1px solid var(--line); }
.news .meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 12.5px; color: var(--ink2); }
.news time { margin-right: 4px; }
.news h3 { margin: 4px 0 4px; font-size: 16px; }
.news p { margin: 0; font-size: 14px; color: var(--ink2); }
.news .src { font-size: 12.5px; color: var(--ink3); margin-top: 4px; }
.news .src a { color: var(--link); }
.k-official { border-color: var(--board) !important; color: var(--board) !important; }
.k-news { color: var(--ink2); }
.k-site { border-style: dashed !important; }
.news-filter, .seg { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.news-filter button, .tabs button, .seg button { border: 1px solid var(--line2); background: var(--card); border-radius: 999px; padding: 5px 14px; font-size: 13.5px; color: var(--ink2); }
.news-filter button:hover, .tabs button:hover, .seg button:hover { color: var(--ink); border-color: var(--ink3); }
.news-filter button[aria-pressed='true'], .tabs button[aria-selected='true'], .seg button[aria-pressed='true'] { background: var(--board); border-color: var(--board); color: var(--chalk); }

/* ---------- ページの見出し ---------- */
.page-head { padding: 30px 0 22px; position: relative; }
.page-head h1 { font-size: clamp(26px, 3.6vw, 38px); margin: 12px 0 10px; letter-spacing: .05em; }
.page-head .lead { color: var(--ink2); max-width: 46em; margin: 0; font-size: 15.5px; }
.page-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 12px; font-size: 13px; color: var(--ink2); align-items: center; }
.ph-icon { display: none; }
/* 黒板の見出し（校種ハブなど） */
.board-head { background: var(--board); color: var(--chalk); border-bottom: 6px solid #8a6d4a; position: relative; overflow: hidden; }
.board-head::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 15% 0%, rgba(255,255,255,.07), transparent 60%); pointer-events: none; }
.board-head .inner { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 32px; align-items: center; padding: 36px 0 34px; }
.board-head .kicker { color: var(--chalk2); border-color: rgba(243,241,233,.35); }
.board-head h1 { font-size: clamp(26px, 3.8vw, 40px); margin: 12px 0 10px; letter-spacing: .06em; }
.board-head h1 .y { color: var(--chalk-y); }
.board-head .lead { color: var(--chalk2); margin: 0; max-width: 36em; }
.board-head .lead b { color: var(--chalk); font-weight: 500; }
.board-head img { width: 100%; height: auto; border-radius: 10px; display: block; }
.board-head .facts { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 16px; font-size: 13.5px; color: var(--chalk2); }
.board-head .facts b { color: var(--chalk-y); font-weight: 500; font-size: 16px; margin-left: 4px; }
.board-head .crumbs { color: var(--chalk2); padding-top: 0; margin-bottom: 4px; }
.board-head .crumbs a { color: var(--chalk2); }
@media (max-width: 860px) { .board-head .inner { grid-template-columns: 1fr; } .board-head .art { order: -1; max-height: 220px; overflow: hidden; border-radius: 10px; } }

/* ---------- 記事レイアウト ---------- */
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 48px; align-items: start; padding-bottom: 40px; }
@media (max-width: 1000px) { .layout { grid-template-columns: 1fr; } .toc-side { display: none; } }
.toc-side { position: sticky; top: calc(var(--header-h) + 20px); font-size: 13px; border-left: 1px solid var(--line); padding-left: 16px; max-height: calc(100vh - 120px); overflow-y: auto; }
.toc-side b { display: block; font-size: 12px; letter-spacing: .12em; color: var(--ink3); margin-bottom: 8px; font-weight: 500; }
.toc-side ol, .toc-inline ol { list-style: none; margin: 0; padding: 0; }
.toc-side li, .toc-inline li { margin: 0; }
.toc-side a, .toc-inline a { display: block; padding: 4px 0; text-decoration: none; color: var(--ink2); line-height: 1.6; }
.toc-side a:hover, .toc-inline a:hover { color: var(--ink); }
.toc-side a.on { color: var(--ink); font-weight: 700; }
.toc-inline { display: none; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--card); padding: 10px 16px; margin-bottom: 20px; font-size: 14px; }
.toc-inline summary { cursor: pointer; color: var(--ink2); }
@media (max-width: 1000px) { .toc-inline { display: block; } }

.prose { font-size: 16px; min-width: 0; }
.prose h2 { font-size: clamp(20px, 2.4vw, 24px); margin: 52px 0 16px; padding: 0 0 10px; border-bottom: 1px solid var(--line); position: relative; }
.prose h2::before { content: ''; position: absolute; left: 0; bottom: -1px; width: 56px; height: 2px; background: var(--board); }
.prose section:first-child h2 { margin-top: 10px; }
.prose h3 { font-size: 18px; margin: 32px 0 10px; }
.prose h4 { font-size: 16px; margin: 20px 0 6px; }
.prose p { margin: 0 0 14px; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 14px; }
.prose li { margin: 4px 0; }
.prose table { font-size: 14px; }
.prose strong, .prose b { font-weight: 700; }
.pgs { display: inline-flex; flex-wrap: wrap; gap: 4px; vertical-align: 1px; }
.pg { display: inline-block; font-size: 11px; line-height: 1.5; padding: 0 5px; border: 1px solid var(--line2); border-radius: 3px; color: var(--ink2); text-decoration: none !important; white-space: nowrap; letter-spacing: 0; font-weight: 400; }
a.pg:hover { border-color: var(--link); color: var(--link); }
mark, .mk { background: linear-gradient(transparent 58%, var(--mark) 58%); color: inherit; padding: 0 1px; }
.mk-new { background: linear-gradient(transparent 50%, var(--mark-new) 50%); }
.mk-old { background: linear-gradient(transparent 50%, var(--mark-old) 50%); }
body.no-marker .mk-new, body.no-marker .mk-old, body.no-marker mark { background: none; }

.box { background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--line2); border-radius: var(--r-sm); padding: 14px 18px; margin: 16px 0; }
.box > :last-child { margin-bottom: 0; }
.box h3, .box h4 { margin-top: 0; }
.box.pt { border-left-color: var(--board); }
.box.warn { border-left-color: var(--orange); }
.box.ok { border-left-color: var(--ko); }
.box.info { border-left-color: var(--chu); }
.box .ttl { font-weight: 700; margin-bottom: 4px; font-family: var(--head); }
.callout-src { font-size: 12.5px; color: var(--ink2); border-top: 1px solid var(--line); padding-top: 10px; margin-top: 24px; }

/* ---------- 新旧比較 ---------- */
.cmp-tools { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 14px; }
.cmp-tools .seg { margin: 0; }
.cmp-legend { font-size: 13px; color: var(--ink2); }
.cmp { display: grid; gap: 14px; }
.cmp-row { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 16px 18px; }
.cmp-row > h3 { margin: 0 0 10px; font-size: 16px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.cmp-cols { display: grid; grid-template-columns: 1fr 28px 1fr; gap: 10px; align-items: stretch; }
.cmp-cols > div { font-size: 14.5px; line-height: 1.85; }
.cmp-cols .old { color: var(--ink2); }
.cmp-cols .arrow { display: grid; place-items: center; color: var(--ink3); }
.cmp-cols .lab { display: block; font-size: 11.5px; letter-spacing: .1em; color: var(--ink3); margin-bottom: 2px; }
.cmp-cols .new .lab { color: var(--board); }
.cmp-row .src { margin-top: 8px; font-size: 12px; color: var(--ink3); }
body.only-new .cmp-cols { grid-template-columns: 1fr; }
body.only-new .cmp-cols .old, body.only-new .cmp-cols .arrow { display: none; }
@media (max-width: 680px) { .cmp-cols { grid-template-columns: 1fr; } .cmp-cols .arrow { transform: rotate(90deg); height: 20px; } }

/* ---------- 表 ---------- */
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--card); margin: 12px 0 16px; }
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th, .tbl td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; line-height: 1.75; }
.tbl thead th { background: var(--bg2); font-weight: 700; font-size: 13px; color: var(--ink2); white-space: nowrap; }
.tbl tbody tr:last-child td { border-bottom: 0; }
.tbl td.c, .tbl th.c { text-align: center; }
.tbl .hl td { background: color-mix(in srgb, var(--mark-new) 35%, transparent); }
.yes { color: var(--ko); font-weight: 700; }

/* スケジュール表 */
.gantt { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--card); }
.gantt table { border-collapse: collapse; min-width: 860px; width: 100%; font-size: 12.5px; }
.gantt th, .gantt td { border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); padding: 8px 6px; text-align: center; line-height: 1.5; }
.gantt thead th { background: var(--bg2); font-weight: 700; }
.gantt thead th small { display: block; font-weight: 400; color: var(--ink3); font-size: 10.5px; }
.gantt tbody th { text-align: left; white-space: nowrap; padding-left: 12px; background: var(--card); }
.gantt td.cur { background: color-mix(in srgb, var(--ink) 4%, transparent); color: var(--ink2); }
.gantt td.prep { background: #f6efd3; }
.gantt td.pre { background: #dfe9f2; }
.gantt td.full { background: #dcebdf; font-weight: 700; }
.gantt td.now, .gantt th.now { box-shadow: inset 0 0 0 2px var(--board); }
:root[data-theme='dark'] .gantt td.prep { background: #3a3522; } :root[data-theme='dark'] .gantt td.pre { background: #22303d; } :root[data-theme='dark'] .gantt td.full { background: #213a2a; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 12.5px; color: var(--ink2); margin-top: 8px; }
.legend i { display: inline-block; width: 14px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }

/* カウントダウン表 */
.cd-table { width: 100%; border-collapse: collapse; margin: 6px 0 0; font-size: 14px; }
.cd-table th, .cd-table td { padding: 9px 10px; border-bottom: 1px solid rgba(243,241,233,.18); text-align: left; }
.cd-table thead th { font-size: 12px; color: var(--chalk2); font-weight: 400; }
.cd-table td b { font-family: var(--head); font-size: 22px; color: var(--chalk-y); margin: 0 3px; font-weight: 700; }
.cd-table td small { display: block; font-size: 11.5px; color: var(--chalk2); }
.cd-table td.pre b { font-size: 17px; color: var(--chalk); }
.cd-table .dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 8px; vertical-align: 1px; }
.cd-table tr:last-child th, .cd-table tr:last-child td { border-bottom: 0; }
.prose .cd-table th, .prose .cd-table td, .sec .cd-table th, .sec .cd-table td { border-bottom-color: var(--line); }
.prose .cd-table thead th, .prose .cd-table td small, .sec .cd-table thead th, .sec .cd-table td small { color: var(--ink2); }
.prose .cd-table td b, .sec .cd-table td b { color: var(--board); }
.prose .cd-table td.pre b, .sec .cd-table td.pre b { color: var(--ink); }
.hero .small.muted { color: var(--chalk2); }

/* 進行トラッカー */
.hero-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 20px 22px; }
.hero-card h2 { font-size: 18px; margin: 0 0 12px; }
.hero-card .badge-now { font-size: 11px; border: 1px solid var(--sho); color: var(--sho); border-radius: 4px; padding: 0 6px; vertical-align: 3px; font-family: var(--font); }
.track { list-style: none; margin: 0 0 8px; padding: 0 0 0 4px; position: relative; }
.track::before { content: ''; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 1px; background: var(--line2); }
.track li { position: relative; padding: 4px 0 8px 28px; font-size: 14px; }
.track li::before { content: ''; position: absolute; left: 0; top: 9px; width: 11px; height: 11px; border-radius: 50%; border: 1px solid var(--line2); background: var(--card); }
.track li.done::before { background: var(--ink3); border-color: var(--ink3); }
.track li.now::before { background: var(--board); border-color: var(--board); box-shadow: 0 0 0 4px color-mix(in srgb, var(--board) 18%, transparent); }
.track li.fut { color: var(--ink2); }
.track li b { display: block; font-weight: 500; }
.track li.now b { font-weight: 700; }
.track li .d { display: block; font-size: 12px; color: var(--ink3); }
.track li.now b::after { content: '  いまここ'; font-size: 11.5px; color: var(--board); font-weight: 400; }
.track li .est { font-size: 10.5px; border: 1px solid var(--line2); border-radius: 3px; padding: 0 4px; margin-left: 6px; color: var(--ink3); font-weight: 400; }

/* 学年チェッカー */
.checker { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 18px 20px; }
.checker label { display: block; font-weight: 700; margin-bottom: 6px; font-family: var(--head); }
.checker select { font: inherit; padding: 9px 12px; border-radius: 8px; border: 1px solid var(--line2); background: var(--bg); color: var(--ink); min-width: 220px; }
.checker .out { margin-top: 14px; }
.checker .out ol { list-style: none; margin: 8px 0; padding: 0; border-top: 1px solid var(--line); }
.checker .out li { display: flex; gap: 14px; padding: 7px 4px; border-bottom: 1px solid var(--line); font-size: 14px; }
.checker .out li .y { color: var(--ink3); min-width: 6.5em; }
.checker .out li.new { background: color-mix(in srgb, var(--mark-new) 45%, transparent); }
.checker .out li.pre { background: color-mix(in srgb, #dfe9f2 55%, transparent); }
.checker .sum { font-weight: 700; font-size: 16px; margin: 0; }
.checker .todo-me { margin-top: 16px; }

/* ---------- 教科カード・早見表 ---------- */
.subj { border-top: 3px solid var(--c, var(--line2)); }
.subj .lv { font-size: 12px; color: var(--ink3); }
.subj-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.subj-pills a { text-decoration: none; border: 1px solid var(--line2); background: var(--card); padding: 6px 14px; border-radius: 999px; font-size: 14px; }
.subj-pills a:hover { border-color: var(--board); color: var(--board); }
.hy-lv { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 6px; font-size: 13.5px; }
.hy-lv li { display: flex; gap: 8px; align-items: baseline; }
.hy-lv li .chip { flex-shrink: 0; }
.hy-lv li.none { color: var(--ink3); }
.hy-grid.f-sho .hy-chu, .hy-grid.f-sho .hy-ko, .hy-grid.f-chu .hy-sho, .hy-grid.f-chu .hy-ko, .hy-grid.f-ko .hy-sho, .hy-grid.f-ko .hy-chu { display: none; }
.hy-grid.f-sho .hy:has(.hy-sho.none), .hy-grid.f-chu .hy:has(.hy-chu.none), .hy-grid.f-ko .hy:has(.hy-ko.none) { display: none; }

/* ---------- 単語リスト ---------- */
.wl-tools { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 10px; }
.wl-tools input, .wl-tools select { font: inherit; padding: 8px 12px; border: 1px solid var(--line2); border-radius: 8px; background: var(--card); color: var(--ink); }
.wl-count { font-size: 13px; color: var(--ink2); }
.wl { width: 100%; border-collapse: collapse; font-size: 14px; background: var(--card); }
.wl th { position: sticky; top: var(--header-h); background: var(--bg2); text-align: left; padding: 8px 10px; font-size: 12.5px; color: var(--ink2); border-bottom: 1px solid var(--line); }
.wl td { padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.wl td.w { font-weight: 700; white-space: nowrap; }
.wl td.w button { border: 0; background: none; padding: 0 0 0 6px; color: var(--ink3); }
.wl td.w button::after { content: '♪'; font-size: 13px; }
.wl td.p { color: var(--ink3); font-size: 12.5px; }
.wl td.e { font-size: 13px; }
.wl td.e i { display: block; font-style: normal; color: var(--ink3); font-size: 12px; }
.lvb { font-size: 11px; padding: 0 6px; border-radius: 3px; border: 1px solid var(--line2); }
.lv-A1 { color: var(--ko); border-color: var(--ko); }
.lv-A2 { color: var(--chu); border-color: var(--chu); }

/* ---------- 授業アイデア・指導案 ---------- */
.idea-meta { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 14px; }
.steps { list-style: none; counter-reset: s; margin: 0; padding: 0; display: grid; gap: 10px; }
.steps > li { counter-increment: s; position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 12px 16px 12px 52px; }
.steps > li::before { content: counter(s); position: absolute; left: 14px; top: 12px; width: 24px; height: 24px; border-radius: 50%; border: 1px solid var(--board); color: var(--board); display: grid; place-items: center; font-size: 12.5px; }
.steps .min { font-size: 12px; color: var(--ink3); margin-left: 6px; }
.say { display: block; margin-top: 8px; padding: 8px 12px; border-left: 2px solid var(--line2); background: var(--bg2); border-radius: 0 6px 6px 0; font-size: 13.5px; }
.say .en { display: block; font-family: Georgia, 'Times New Roman', serif; letter-spacing: .01em; }
.say .ja { display: block; color: var(--ink2); font-size: 12.5px; }
.say.q .en { font-family: var(--font); }
.plan-tbl td:first-child { white-space: nowrap; color: var(--ink2); }
.plan-tbl td ul { margin: 0; padding-left: 1.1em; }
.print-btns { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 20px; }
.eyecatch { width: 100%; height: auto; border-radius: var(--r-sm); border: 1px solid var(--line); margin: 0 0 14px; display: block; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 0; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 14px 36px 14px 34px; position: relative; font-weight: 700; font-family: var(--head); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: 'Q'; position: absolute; left: 4px; top: 13px; color: var(--board); font-family: var(--head); }
.faq summary::after { content: '+'; position: absolute; right: 8px; top: 12px; color: var(--ink3); font-size: 18px; font-weight: 400; }
.faq details[open] summary::after { content: '−'; }
.faq .a { padding: 0 8px 16px 34px; position: relative; color: var(--ink); font-size: 15px; }
.faq .a::before { content: 'A'; position: absolute; left: 4px; top: 0; color: var(--sho); font-family: var(--head); font-weight: 700; }

/* ---------- ダウンロード ---------- */
.dl { display: flex; gap: 14px; align-items: flex-start; }
.dl .ic { flex-shrink: 0; width: 44px; height: 54px; border: 1px solid var(--line2); border-radius: 4px; display: grid; place-items: center; font-size: 11px; color: var(--ink2); background: var(--card); }
.dl .ic.pdf { color: var(--sho); border-color: var(--sho); }
.dl h3 { margin: 0 0 4px; font-size: 16px; }
.dl p { margin: 0 0 8px; font-size: 13.5px; color: var(--ink2); }
.dl .acts { display: flex; gap: 8px; flex-wrap: wrap; }

.harada .tag { position: absolute; right: 14px; top: 14px; }

/* 用語集 */
.gl { margin: 0; }
.gl dt { font-weight: 700; font-family: var(--head); margin-top: 18px; font-size: 16.5px; }
.gl dt small { font-weight: 400; color: var(--ink3); font-size: 12px; margin-left: 8px; font-family: var(--font); }
.gl dd { margin: 4px 0 0; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.gl-index { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }

/* チェックリスト */
.todo { list-style: none; margin: 0 0 12px; padding: 0; border-top: 1px solid var(--line); }
.todo li { border-bottom: 1px solid var(--line); display: flex; gap: 12px; align-items: flex-start; padding: 10px 4px; }
.todo input { margin-top: 6px; width: 18px; height: 18px; accent-color: var(--board); flex-shrink: 0; }
.todo label { cursor: pointer; font-size: 14.5px; line-height: 1.8; }
.todo li.done label { color: var(--ink3); text-decoration: line-through; text-decoration-color: var(--ink3); }
.todo .when { display: inline-block; font-size: 11.5px; border: 1px solid var(--line2); border-radius: 3px; padding: 0 6px; margin-right: 6px; color: var(--ink2); vertical-align: 1px; }
.todo .why { display: block; font-size: 12.5px; color: var(--ink2); margin-top: 2px; }
.todo-progress { height: 4px; background: var(--line); border-radius: 2px; overflow: hidden; margin: 6px 0 10px; }
.todo-progress span { display: block; height: 100%; width: 0; background: var(--board); transition: width .3s; }

/* 共有 */
.share { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 30px 0 10px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 13px; color: var(--ink2); }
.share b { font-weight: 400; }

/* ---------- フッター ---------- */
.site-footer { background: var(--board2); color: var(--chalk2); margin-top: 40px; padding: 44px 0 24px; font-size: 13.5px; }
.site-footer a { color: var(--chalk2); text-decoration: none; }
.site-footer a:hover { color: var(--chalk); text-decoration: underline; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; }
@media (max-width: 900px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .foot-grid { grid-template-columns: 1fr; } }
.site-footer h3 { color: var(--chalk); font-size: 13px; letter-spacing: .1em; margin: 0 0 8px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 3px 0; }
.site-footer .brand { font-family: var(--head); color: var(--chalk); font-size: 18px; margin-bottom: 8px; }
.site-footer .note { font-size: 12.5px; line-height: 1.85; }
.site-footer .note a { text-decoration: underline; }
.copy { margin: 28px 0 0; font-size: 12px; color: color-mix(in srgb, var(--chalk2) 70%, transparent); }

.to-top { position: fixed; right: 16px; bottom: 16px; z-index: 40; display: flex; align-items: center; gap: 4px; padding: 7px 12px; border-radius: 8px; border: 1px solid var(--line2); background: var(--card); font-size: 12px; color: var(--ink2); opacity: 0; pointer-events: none; transition: opacity .2s; }
.to-top svg { width: 14px; height: 14px; }
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { color: var(--ink); }

.reveal { opacity: 1; }
pre.prompt { white-space: pre-wrap; background: var(--bg2); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 12px 14px; font-size: 13.5px; line-height: 1.75; font-family: var(--font); }

/* カウントボックス（旧） */
.count-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.count { border: 1px solid var(--line); border-radius: var(--r-sm); padding: 12px; background: var(--card); }
.count .lbl { font-size: 12.5px; color: var(--ink2); }
.count .num { font-family: var(--head); font-size: 28px; }
.count .num small { font-size: 13px; }
.count .sub { font-size: 12px; color: var(--ink3); }
.count-cap { font-size: 12.5px; color: var(--ink2); }

/* =========================================================
   新しいパーツ：校種ハブ・やさしい解説・図解アニメ
   ========================================================= */
/* ひとことで／たとえると */
.plain-lead { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 0 0 8px; }
@media (max-width: 700px) { .plain-lead { grid-template-columns: 1fr; } }
.plain-lead > div { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 18px 20px; }
.plain-lead .lab { display: block; font-size: 12px; letter-spacing: .12em; color: var(--ink3); margin-bottom: 4px; }
.plain-lead .hitokoto { font-family: var(--head); font-size: 20px; line-height: 1.6; margin: 0; font-weight: 700; }
.plain-lead .tatoe { margin: 0; font-size: 15px; }

/* 大きな変化（いままで → これから） */
.big { list-style: none; margin: 0; padding: 0; counter-reset: b; display: grid; gap: 14px; }
.big > li { counter-increment: b; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 18px 20px 16px; }
.big h3 { margin: 0 0 6px; font-size: 18px; display: flex; gap: 10px; align-items: baseline; }
.big h3::before { content: counter(b, decimal-leading-zero); font-size: 13px; color: var(--board); font-family: var(--font); letter-spacing: .05em; }
.big p { margin: 0 0 10px; }
.ba { display: grid; grid-template-columns: 1fr 22px 1fr; gap: 8px; font-size: 14px; }
.ba > div { border-radius: 8px; padding: 8px 12px; }
.ba .b { background: var(--bg2); color: var(--ink2); }
.ba .a { background: color-mix(in srgb, var(--mark-new) 55%, transparent); }
.ba .arr { display: grid; place-items: center; color: var(--ink3); }
.ba small { display: block; font-size: 11px; letter-spacing: .1em; color: var(--ink3); }
@media (max-width: 640px) { .ba { grid-template-columns: 1fr; } .ba .arr { transform: rotate(90deg); height: 16px; } }

/* 変わらないこと */
.keep { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 12px; }
.keep > div { border: 1px dashed var(--line2); border-radius: var(--r); padding: 14px 16px; background: color-mix(in srgb, var(--card) 70%, transparent); }
.keep b { display: block; font-family: var(--head); margin-bottom: 4px; }
.keep p { margin: 0; font-size: 14px; color: var(--ink2); }

/* 教科のアコーディオン */
.acc { border-top: 1px solid var(--line); }
.acc > details { border-bottom: 1px solid var(--line); }
.acc > details > summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: 9em 1fr 20px; gap: 14px; align-items: baseline; padding: 14px 4px; }
.acc > details > summary::-webkit-details-marker { display: none; }
.acc > details > summary::after { content: '+'; color: var(--ink3); font-size: 18px; text-align: right; }
.acc > details[open] > summary::after { content: '−'; }
.acc summary b { font-family: var(--head); font-size: 16px; }
.acc summary span { color: var(--ink2); font-size: 14.5px; }
.acc .acc-body { padding: 0 4px 20px; }
.acc .acc-body h4 { margin: 16px 0 6px; font-size: 15.5px; }
.acc .acc-body .classroom { font-size: 14px; color: var(--ink2); border-left: 2px solid var(--line2); padding-left: 10px; margin: 6px 0 0; }
@media (max-width: 640px) { .acc > details > summary { grid-template-columns: 1fr 20px; } .acc summary span { grid-column: 1; } }

/* 段落の「やさしく」ラベル */
.yasashi { display: inline-block; font-size: 11.5px; letter-spacing: .1em; color: var(--board); border: 1px solid var(--board); border-radius: 3px; padding: 0 6px; margin-right: 6px; vertical-align: 2px; }

/* 校種タブ（教科ページ） */
.lv-tabs { position: sticky; top: var(--header-h); z-index: 20; background: color-mix(in srgb, var(--bg) 94%, transparent); padding: 10px 0; margin: 0 0 6px; border-bottom: 1px solid var(--line); }
.lv-tabs .seg { margin: 0; }
.lv-tabs .lv-note { margin: 6px 0 0; color: var(--ink2); }
[data-lv-only][hidden] { display: none !important; }

/* 用語のミニ辞典 */
.words { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 10px; }
.words > div { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 12px 14px; }
.words b { display: block; font-family: var(--head); }
.words p { margin: 2px 0 0; font-size: 14px; color: var(--ink2); }

/* 学校で見える変化（保護者） */
.scenes { display: grid; gap: 12px; }
.scene { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 16px 18px; }
.scene h3 { margin: 0 0 8px; font-size: 17px; }
.scene .tip { font-size: 14px; color: var(--ink2); margin: 8px 0 0; border-top: 1px dashed var(--line2); padding-top: 8px; }

/* 年表 */
.tl { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line2); margin-left: 6px; }
.tl li { position: relative; padding: 0 0 18px 22px; }
.tl li::before { content: ''; position: absolute; left: -6px; top: 8px; width: 11px; height: 11px; border-radius: 50%; background: var(--card); border: 1px solid var(--line2); }
.tl li.done::before { background: var(--ink3); border-color: var(--ink3); }
.tl li.next::before { background: var(--board); border-color: var(--board); }
.tl .w { font-size: 12.5px; color: var(--ink3); display: block; }
.tl b { font-family: var(--head); }
.tl p { margin: 2px 0 0; font-size: 14px; color: var(--ink2); }

/* ---------- 図解アニメ ---------- */
.zk { background: var(--board); color: var(--chalk); border-radius: 14px; overflow: hidden; border-bottom: 6px solid #8a6d4a; position: relative; }
.zk-stage { position: relative; aspect-ratio: 16 / 9; min-height: 300px; overflow: hidden; }
@media (max-width: 640px) { .zk-stage { aspect-ratio: auto; min-height: 420px; } }
.zk-slide { position: absolute; inset: 0; padding: clamp(18px, 4vw, 44px) clamp(18px, 5vw, 56px); display: flex; flex-direction: column; justify-content: center; opacity: 0; visibility: hidden; transition: opacity .5s ease, visibility 0s linear .5s; }
.zk-slide.on { opacity: 1; visibility: visible; transition: opacity .5s ease; }
.zk-slide .lab { font-size: 12px; letter-spacing: .14em; color: var(--chalk2); margin-bottom: 8px; }
.zk-slide h3 { font-size: clamp(20px, 3.2vw, 34px); margin: 0 0 14px; letter-spacing: .06em; line-height: 1.45; }
.zk-slide h3 .y { color: var(--chalk-y); }
.zk-slide p { margin: 0; color: var(--chalk2); font-size: clamp(14px, 1.7vw, 18px); max-width: 40em; }
.zk-slide .pgs .pg { color: var(--chalk2); border-color: rgba(243,241,233,.35); }
.zk-items { list-style: none; margin: 4px 0 0; padding: 0; display: grid; gap: 10px; }
.zk-items li { font-size: clamp(14px, 1.8vw, 19px); padding-left: 30px; position: relative; color: var(--chalk); }
.zk-items li::before { content: ''; position: absolute; left: 4px; top: .7em; width: 14px; height: 2px; background: var(--chalk-y); }
.zk-ba { display: grid; grid-template-columns: 1fr 60px 1fr; gap: 10px; align-items: stretch; }
.zk-ba > div { border: 1px solid rgba(243,241,233,.3); border-radius: 10px; padding: 14px 16px; font-size: clamp(13.5px, 1.6vw, 17px); }
.zk-ba small { display: block; font-size: 11.5px; letter-spacing: .12em; color: var(--chalk2); margin-bottom: 4px; }
.zk-ba .a { border-color: var(--chalk-y); }
.zk-ba .arr { display: grid; place-items: center; }
.zk-ba .arr svg { width: 48px; height: 24px; }
.zk-ba .arr path { stroke: var(--chalk-y); stroke-width: 2.5; fill: none; stroke-dasharray: 60; stroke-dashoffset: 60; }
.zk-slide.on .zk-ba .arr path { animation: zk-draw .8s .9s ease forwards; }
@media (max-width: 640px) { .zk-ba { grid-template-columns: 1fr; } .zk-ba .arr { transform: rotate(90deg); height: 30px; } }
.zk-tl { display: flex; gap: 0; align-items: flex-start; margin-top: 10px; position: relative; }
.zk-tl::before { content: ''; position: absolute; left: 0; right: 0; top: 9px; height: 2px; background: rgba(243,241,233,.3); }
.zk-tl::after { content: ''; position: absolute; left: 0; top: 9px; height: 2px; background: var(--chalk-y); width: 0; }
.zk-slide.on .zk-tl::after { animation: zk-grow 2.4s .4s ease forwards; }
.zk-tl > div { flex: 1; position: relative; padding-top: 26px; font-size: clamp(11.5px, 1.4vw, 14.5px); text-align: center; color: var(--chalk2); }
.zk-tl > div::before { content: ''; position: absolute; left: 50%; top: 3px; width: 14px; height: 14px; margin-left: -7px; border-radius: 50%; background: var(--board); border: 2px solid var(--chalk2); }
.zk-tl > div.hi::before { border-color: var(--chalk-y); background: var(--chalk-y); }
.zk-tl > div b { display: block; color: var(--chalk); font-family: var(--head); font-size: clamp(13px, 1.7vw, 18px); }
.zk-big { font-family: var(--head); font-size: clamp(40px, 8vw, 96px); color: var(--chalk-y); line-height: 1.1; letter-spacing: .02em; }
.zk-big small { font-size: .35em; color: var(--chalk2); margin-left: 6px; }
/* 文字が順に出る（チョークで書くように） */
.zk-slide [data-in] { opacity: 0; transform: translateY(10px); }
.zk-slide.on [data-in] { animation: zk-in .7s ease forwards; animation-delay: calc(var(--d, 0) * 1s); }
@keyframes zk-in { to { opacity: 1; transform: none; } }
@keyframes zk-draw { to { stroke-dashoffset: 0; } }
@keyframes zk-grow { to { width: 100%; } }
.zk-ctrl { display: flex; align-items: center; gap: 12px; padding: 10px 16px 12px; border-top: 1px solid rgba(243,241,233,.15); }
.zk-ctrl button { border: 1px solid rgba(243,241,233,.35); background: transparent; color: var(--chalk); border-radius: 6px; padding: 4px 12px; font-size: 13px; }
.zk-ctrl button:hover { border-color: var(--chalk); }
.zk-bar { flex: 1; display: flex; gap: 4px; }
.zk-bar i { flex: 1; height: 3px; background: rgba(243,241,233,.2); border-radius: 2px; overflow: hidden; cursor: pointer; position: relative; }
.zk-bar i::after { content: ''; position: absolute; inset: 0; background: var(--chalk-y); transform-origin: left; transform: scaleX(0); }
.zk-bar i.done::after { transform: scaleX(1); }
.zk-bar i.cur::after { animation: zk-prog var(--dur, 7s) linear forwards; }
.zk.paused .zk-bar i.cur::after { animation-play-state: paused; }
@keyframes zk-prog { to { transform: scaleX(1); } }
.zk-ctrl .cnt { font-size: 12px; color: var(--chalk2); min-width: 3.5em; text-align: right; }
@media (prefers-reduced-motion: reduce) { .zk-slide [data-in] { opacity: 1; transform: none; animation: none !important; } .zk-tl::after { width: 100%; animation: none !important; } }
.zk-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.zk-card { display: block; text-decoration: none; background: var(--board); color: var(--chalk); border-radius: 10px; padding: 16px 18px 14px; border-bottom: 4px solid #8a6d4a; min-height: 120px; position: relative; transition: transform .2s; }
.zk-card:hover { transform: translateY(-2px); }
.zk-card small { display: block; font-size: 11.5px; letter-spacing: .12em; color: var(--chalk2); }
.zk-card b { display: block; font-family: var(--head); font-size: 17px; margin: 4px 0 6px; line-height: 1.5; }
.zk-card span { font-size: 12.5px; color: var(--chalk-y); }

/* ---------- 印刷 ---------- */
@media print {
  .site-header, .notice-bar, .drawer, .drawer-bg, .to-top, .toc-side, .toc-inline, .share, .no-print, .site-footer, .crumbs, .progress, .lv-bar, .lv-tabs, .zk-ctrl { display: none !important; }
  body { background: #fff; font-size: 10.5pt; }
  .layout { display: block; }
  /* 黒板（緑の帯）は印刷でも緑のまま。文字は白系のまま（黒にすると緑に沈んで読めない：2026-11-03 Codex の指摘） */
  .board-head, .hero { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  /* 見出しだけがページの最後に取り残されない・1文字だけ次の行に落ちない・段落の1行だけが次ページに行かない */
  h2, h3, h4, .sec-title { break-after: avoid; }
  body { word-break: auto-phrase; text-wrap: pretty; }
  p, li { orphans: 2; widows: 2; }
  .doc, .pdf-link { break-inside: avoid; }
  .card, .box, .tbl-wrap, .cmp-row { break-inside: avoid; }
  /* 記事PDF：上の黒板は小さく（絵は右に小さく・見出しは控えめ）、下の本文と間をあける。ページ内ジャンプは紙では使わない */
  .board-head { margin-bottom: 7mm; }
  .board-head .inner { grid-template-columns: minmax(0, 1fr) auto !important; gap: 14px; padding: 12px 0 14px; }
  .board-head .art { order: 0 !important; max-height: none !important; }
  .board-head .art img { width: auto; max-width: 48mm; max-height: 30mm; object-fit: contain; }
  .board-head img.subj-art { width: 24mm !important; height: 24mm !important; }
  .board-head h1 { font-size: 19pt; margin: 6px 0 4px; }
  .board-head .lead { font-size: 10pt; }
  .board-head .facts { margin-top: 8px; font-size: 9pt; }
  .board-head .facts b { font-size: 10.5pt; }
  .subj-jump { display: none !important; }
}
@media (min-width: 1181px) { .lv-bar { display: none; } }
@media (max-width: 1400px) { .search-btn span { display: none; } .search-btn { width: 38px; padding: 0; justify-content: center; } }
.cd-table th { white-space: nowrap; }
.prose .big, .prose .three, .prose .tl, .prose .steps, .prose .todo, .prose .zk-items { padding-left: 0; }
.prose .big > li, .prose .three > li { margin: 0; }
.prose ol.big { list-style: none; }
/* 図解アニメ：たっぷり動かす（色は落ち着いたまま） */
.zk-stage { aspect-ratio: 16 / 8.2; max-height: 600px; }
.zk-slide { padding-right: clamp(18px, 14vw, 200px); }
.zk-slide h3 { font-size: clamp(22px, 3.4vw, 40px); }
.zk-slide p { font-size: clamp(15px, 1.9vw, 20px); line-height: 1.85; }
.zk-slide h3 .y { position: relative; display: inline-block; }
.zk-slide h3 .y::after { content: ''; position: absolute; left: 0; right: 0; bottom: -4px; height: 3px; border-radius: 2px; background: var(--chalk-y); transform: scaleX(0); transform-origin: left; opacity: .85; }
.zk-slide.on h3 .y::after { animation: zk-line .9s 1.1s ease forwards; }
@keyframes zk-line { to { transform: scaleX(1); } }
.zk-num { position: absolute; right: clamp(14px, 4vw, 48px); top: 50%; transform: translateY(-50%) scale(.85); font-family: var(--head); font-weight: 700; font-size: clamp(90px, 16vw, 210px); line-height: 1; color: transparent; -webkit-text-stroke: 1.5px rgba(243,241,233,.22); opacity: 0; pointer-events: none; }
.zk-slide.on .zk-num { animation: zk-num 1.2s .1s ease forwards; }
@keyframes zk-num { to { opacity: 1; transform: translateY(-50%) scale(1); } }
.zk-items li[data-in] { transform: translateX(-24px); }
.zk-items li { font-size: clamp(15px, 2vw, 21px); }
.zk-ba > div { font-size: clamp(14px, 1.8vw, 19px); line-height: 1.75; }
.zk-ba .a[data-in] { transform: translateX(24px); }
.zk-chalk { position: absolute; inset: 0; pointer-events: none; opacity: .5; }
.zk-chalk circle, .zk-chalk path { fill: none; stroke: rgba(243,241,233,.08); stroke-width: 1.5; }
.zk-chalk .c1 { animation: zk-drift 18s ease-in-out infinite alternate; transform-origin: 85% 20%; }
.zk-chalk .c2 { animation: zk-drift 24s ease-in-out infinite alternate-reverse; transform-origin: 10% 90%; }
@keyframes zk-drift { from { transform: rotate(-4deg) translate(0, 0); } to { transform: rotate(5deg) translate(-12px, 10px); } }
.zk.paused .zk-chalk * { animation-play-state: paused; }
@media (prefers-reduced-motion: reduce) { .zk-chalk * { animation: none !important; } .zk-num { opacity: 1; transform: translateY(-50%); animation: none !important; } .zk-slide h3 .y::after { transform: none; animation: none !important; } }
@media (max-width: 640px) { .zk-slide { padding-right: 18px; } .zk-num { font-size: 80px; top: 18px; transform: none; } .zk-slide.on .zk-num { animation-name: zk-num-sp; } @keyframes zk-num-sp { to { opacity: .7; } } }

/* AIの「使ってよい／気をつける／任せない」3列（信号の色を落ち着いたトーンで） */
.tl3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 10px 0 6px; }
.tl3 > div { background: var(--card); border: 1px solid var(--line); border-top: 4px solid var(--c); border-radius: var(--r); padding: 14px 16px; }
.tl3 h3 { margin: 0 0 8px; font-size: 16px; color: var(--c); display: flex; align-items: center; gap: 8px; }
.tl3 h3::before { content: ''; width: 12px; height: 12px; border-radius: 50%; background: var(--c); flex: none; }
.tl3 ul { list-style: none; margin: 0; padding: 0; }
.tl3 li { padding: 9px 0; border-top: 1px dashed var(--line); }
.tl3 li:first-child { border-top: 0; }
.tl3 li b { display: block; font-size: 14.5px; }
.tl3 li span { display: block; font-size: 13px; color: var(--ink2); margin-top: 2px; }
.tl3-ok { --c: #3d7653; }
.tl3-care { --c: #a7802f; }
.tl3-ng { --c: #a8553e; }
@media (max-width: 860px) { .tl3 { grid-template-columns: 1fr; } }

/* ===== 読みやすさ（2026-11-02 文字が小さいとの声を受けて全体を一回り大きく） ===== */
body { font-size: 17px; }
.prose { font-size: 17px; }
.prose h3 { font-size: 19.5px; }
.prose h4 { font-size: 17.5px; }
.prose table, .tbl { font-size: 15.5px; }
.tbl thead th { font-size: 14.5px; }
.small { font-size: 14.5px; }
.card h3 { font-size: 18.5px; }
.card p { font-size: 15.5px; }
.card .go, .more { font-size: 14.5px; }
.chip { font-size: 13.5px; padding: 2px 9px; }
.pg { font-size: 12.5px; padding: 0 6px; }
.btn { font-size: 15.5px; }
.btn.sm { font-size: 14px; }
.news h3 { font-size: 17.5px; }
.news p { font-size: 15.5px; }
.news .meta, .news .src { font-size: 13.5px; }
.news-filter button, .tabs button, .seg button { font-size: 14.5px; padding: 6px 15px; }
.page-head .lead { font-size: 17px; }
.page-meta, .crumbs { font-size: 14px; }
.sec-sub { font-size: 15.5px; }
.kicker { font-size: 13.5px; }
.toc-side { font-size: 14px; }
.toc-side b { font-size: 13px; }
.toc-inline { font-size: 15px; }
.main-nav a { font-size: 15px; }
.lv-bar a { font-size: 14.5px; }
.drawer a { font-size: 15.5px; }
.drawer h3 { font-size: 13px; }
.search-results a b { font-size: 15.5px; }
.search-results a span { font-size: 13.5px; }
.notice-bar { font-size: 14px; }
.cmp-cols > div { font-size: 15.5px; }
.cmp-cols .lab, .cmp-legend { font-size: 13px; }
.cmp-row .src, .callout-src, .legend { font-size: 13.5px; }
.gantt table { font-size: 13.5px; }
.cd-table { font-size: 15px; }
.cd-table td small { font-size: 12.5px; }
.track li { font-size: 15px; }
.track li .d { font-size: 13px; }
.checker .out li { font-size: 15px; }
.board-head .facts { font-size: 14.5px; }
.lv-pick small { font-size: 13px; }
.plain-lead .lab { font-size: 13px; }
.plain-lead .tatoe { font-size: 16px; }
.plain-lead .hitokoto { font-size: 21px; }
.tl3 li b { font-size: 15.5px; }
.tl3 li span { font-size: 14px; }
.three li::before { font-size: 14px; }

/* 上へ戻るボタン：右下の丸いボタン。少し下までスクロールすると出る */
.to-top { right: 20px; bottom: 22px; width: 56px; height: 56px; padding: 0; border-radius: 50%; flex-direction: column; justify-content: center; gap: 0; background: var(--board); border: 2px solid var(--chalk2); color: var(--chalk); font-size: 11.5px; line-height: 1.1; letter-spacing: .05em; transform: translateY(12px); transition: opacity .25s, transform .25s, background .2s; }
.to-top svg { width: 22px; height: 22px; }
.to-top.show { transform: none; }
.to-top:hover, .to-top:focus-visible { color: #fff; background: var(--board2); }
@media (max-width: 560px) { .to-top { right: 14px; bottom: 16px; width: 50px; height: 50px; } body { font-size: 16.5px; } .prose { font-size: 16.5px; } }

/* =========================================================
   英語指導法ラボ（eigoshido）と同じデザイン言語に（2026-11-02 原田さん指示）
   「先生のノート × 黒板」：クリーム色の方眼紙・太い墨の線・ずらした影・黄色のアクセント・丸ゴシックの太字
   ========================================================= */
:root {
  --bg: #fff9ee; --bg2: #fff3dc; --card: #ffffff; --paper: #ffffff;
  --ink: #1d1a16; --ink2: #57514a; --ink3: #8a8174;
  --line: #eadfcb; --line2: #d9ccb2; --ln: #1d1a16;
  --grid: rgba(61, 139, 253, 0.07);
  --board: #1f4e3d; --board2: #173a2e; --chalk: #f4f1e8; --chalk2: #d5e3db; --chalk-y: #ffd23f;
  --yellow: #ffd23f; --coral: #ff6b5b; --blue: #3d8bfd; --green: #00a88f; --purple: #8b5cf6; --pink: #ec4899;
  --accent: #1f4e3d; --link: #1b5fc1;
  --sho: #f0624d; --chu: #3d8bfd; --ko: #00a88f; --all: #8b5cf6;
  --pop: #ffd23f; --mark: rgba(255, 210, 63, 0.55);
  --shadow: 4px 4px 0 var(--ln); --shadow-s: 3px 3px 0 var(--ln);
  --r: 16px; --r-sm: 12px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15171a; --bg2: #1c1f23; --card: #202328; --paper: #202328; --ink: #f1ede4; --ink2: #b9b2a6; --ink3: #8d877d;
    --line: #343840; --line2: #454a53; --ln: #f1ede4; --grid: rgba(120, 170, 255, 0.06); --board: #183c30; --board2: #10291f; --link: #8ab8ff;
    --sho: #ff8a7a; --chu: #6fa8ff; --ko: #2cc9ad; --all: #a78bfa; --mark: rgba(255, 210, 63, 0.35);
  }
}
:root[data-theme="dark"] {
  --bg: #15171a; --bg2: #1c1f23; --card: #202328; --paper: #202328; --ink: #f1ede4; --ink2: #b9b2a6; --ink3: #8d877d;
  --line: #343840; --line2: #454a53; --ln: #f1ede4; --grid: rgba(120, 170, 255, 0.06); --board: #183c30; --board2: #10291f; --link: #8ab8ff;
  --sho: #ff8a7a; --chu: #6fa8ff; --ko: #2cc9ad; --all: #a78bfa; --mark: rgba(255, 210, 63, 0.35);
}
body { background-color: var(--bg); background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px); background-size: 24px 24px; }
h1, h2, h3, .sec-title { font-family: var(--head); font-weight: 900; }

/* ヘッダー */
.site-header { border-bottom: 2.5px solid var(--ln); }
.logo-mark { width: 42px; height: 42px; border: 2.5px solid var(--ln); border-radius: 12px; box-shadow: var(--shadow-s); color: var(--yellow); font-weight: 900; font-size: 22px; transform: rotate(-4deg); }
.logo-text strong { font-weight: 900; }
.main-nav a { font-weight: 700; color: var(--ink); border: 2px solid transparent; border-radius: 999px; padding: 5px 11px; }
.main-nav a:hover { border-color: var(--ln); background: color-mix(in srgb, var(--yellow) 18%, transparent); }
.main-nav a.on { border-color: var(--ln); background: var(--yellow); color: #1d1a16; }
.main-nav a .lvdot { width: 9px; height: 9px; border: 1.5px solid var(--ln); }
.search-btn, .theme-btn, .burger { border: 2.5px solid var(--ln) !important; border-radius: 12px !important; box-shadow: var(--shadow-s); }
.burger { background: var(--yellow) !important; color: #1d1a16; }
.notice-bar { background: var(--yellow); color: #1d1a16; border-bottom: 2.5px solid var(--ln); font-weight: 700; }
.notice-bar b { color: #b3261e; }
.notice-bar .tag { border: 2px solid #1d1a16; color: #1d1a16; background: #fff; font-weight: 900; }
.notice-bar .go { color: #1d1a16; }
.lv-bar { border-bottom: 2.5px solid var(--ln); }
.lv-bar a { font-weight: 700; color: var(--ink); }

/* 黒板のトップ・見出し */
.hero, .board-head { background: radial-gradient(ellipse at 30% 20%, #2a6650 0%, var(--board) 45%, var(--board2) 100%); border-bottom: 3px solid var(--ln); }
.hero h1, .board-head h1 { font-weight: 900; letter-spacing: .02em; text-shadow: 0 2px 0 rgba(0, 0, 0, .25); }
.hero h1 .hl, .board-head h1 .y { color: var(--yellow); background: linear-gradient(transparent 70%, rgba(255, 210, 63, .35) 70%); }
.hero .kicker, .board-head .kicker { background: var(--yellow); color: #1d1a16; border: 0; border-radius: 6px; font-weight: 700; transform: rotate(-1.5deg); }
.hero .lead, .board-head .lead { color: var(--chalk); opacity: .95; }
.hero .lead b, .board-head .lead b { color: var(--yellow); font-weight: 700; }
.hero-art img, .board-head img { border: 3px solid var(--chalk); border-radius: 18px; box-shadow: 6px 6px 0 rgba(0, 0, 0, .35); }
.board-head .facts span { background: rgba(255, 255, 255, .08); border: 2px solid rgba(244, 241, 232, .5); border-radius: 12px; padding: 4px 12px; color: var(--chalk); }
.board-head .facts b { color: var(--yellow); font-weight: 900; }
.board-head .crumbs, .board-head .crumbs a { color: var(--chalk); }
.lv-pick a { background: var(--paper); color: var(--ink); border: 2.5px solid var(--ln); border-radius: 16px; box-shadow: 4px 4px 0 rgba(0, 0, 0, .35); border-bottom: 7px solid var(--c, var(--yellow)); transition: transform .15s; }
.lv-pick a:hover { transform: translate(-2px, -3px); background: var(--paper); }
.lv-pick a:nth-child(1) { --c: var(--sho); } .lv-pick a:nth-child(2) { --c: var(--chu); } .lv-pick a:nth-child(3) { --c: var(--ko); } .lv-pick a:nth-child(4) { --c: var(--all); }
.lv-pick b { font-weight: 900; font-size: 19px; }
.lv-pick small { color: var(--ink2); }
.lv-pick a::after { color: var(--c); font-weight: 900; }
.hero .cta-row .btn, .board-head .btn { background: transparent; color: var(--chalk); border-color: var(--chalk); box-shadow: 3px 3px 0 rgba(0, 0, 0, .35); }
.hero .cta-row .btn.pop, .board-head .btn.pop { background: var(--yellow); color: #1d1a16; border-color: var(--ln); }
.cd-table td.pre b, .cd-table b { color: var(--yellow); }

/* 見出し：太字＋点線 */
.sec-head { border-bottom: 0; padding-bottom: 0; align-items: center; }
.sec-title { display: flex; align-items: center; gap: 10px; }
.sec-head > div:first-child { flex: 1; min-width: 0; }
.sec-head .sec-title::after, .prose h2::after { content: ""; flex: 1; height: 3px; min-width: 30px; background: repeating-linear-gradient(90deg, var(--ln) 0 8px, transparent 8px 14px); opacity: .25; }
.prose h2 { display: flex; align-items: center; gap: 10px; font-weight: 900; border: 0 !important; padding-bottom: 0 !important; }
.prose h2::before { content: ""; width: 10px; height: 26px; border-radius: 4px; background: var(--yellow); border: 2px solid var(--ln); flex: none; }
.more { font-weight: 700; color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }

/* カード・ボタン・チップ */
.card { background: var(--paper); border: 2.5px solid var(--ln); border-radius: var(--r); box-shadow: var(--shadow-s); transition: transform .12s, box-shadow .12s; overflow: hidden; }
a.card:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ln); }
.card h3 { font-weight: 900; }
.card .go { color: var(--ink); font-weight: 700; }
.card .thumb { border-bottom: 2.5px solid var(--ln); border-radius: 13px 13px 0 0; }
.card.lv-sho, .card.lv-chu, .card.lv-ko, .card.lv-all, .card.accent, .subj { border-top-width: 2.5px; border-top-color: var(--ln); border-bottom: 7px solid var(--c, var(--ln)); }
.card.lv-sho { --c: var(--sho); } .card.lv-chu { --c: var(--chu); } .card.lv-ko { --c: var(--ko); } .card.lv-all { --c: var(--all); }
.btn { border: 2.5px solid var(--ln); border-radius: 999px; font-weight: 700; font-family: var(--head); box-shadow: var(--shadow-s); transition: transform .12s, box-shadow .12s; }
.btn:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ln); }
.btn.pop, .btn.primary { background: var(--yellow); color: #1d1a16; border-color: var(--ln); }
.btn.pop:hover { background: var(--yellow); }
.chip { border: 1.5px solid var(--ln); border-radius: 999px; font-weight: 700; color: var(--ink); }
.chip.pop { background: var(--yellow); color: #1d1a16; }
.chip.lv-sho { background: var(--sho); color: #fff; } .chip.lv-chu { background: var(--chu); color: #fff; } .chip.lv-ko { background: var(--ko); color: #fff; } .chip.lv-all { background: var(--all); color: #fff; }
.pg { border: 1.5px solid var(--ln); border-radius: 6px; font-weight: 700; color: var(--ink); background: var(--bg2); }
.pg:hover { background: var(--yellow); }
.zk-slide .pgs .pg { color: #1d1a16; background: #fdf8e8; border-color: #1d1a16; }
.zk-slide .pgs a.pg:hover { color: #1d1a16; background: var(--yellow); }
.subj-pills a { border: 2px solid var(--ln); font-weight: 700; box-shadow: 2px 2px 0 var(--ln); }
.subj-pills a:hover { background: var(--yellow); color: #1d1a16; border-color: var(--ln); }
.news-filter button, .tabs button, .seg button { border: 2px solid var(--ln); font-weight: 700; color: var(--ink); }
.news-filter button[aria-pressed="true"], .tabs button[aria-selected="true"], .seg button[aria-pressed="true"] { background: var(--yellow); color: #1d1a16; border-color: var(--ln); box-shadow: 2px 2px 0 var(--ln); }

/* 囲み・リスト */
.box { border: 2.5px solid var(--ln); border-left-width: 2.5px; border-radius: var(--r); box-shadow: var(--shadow-s); padding: 0 18px 14px; overflow: hidden; }
.box .ttl { margin: 0 -18px 12px; padding: 9px 18px; border-bottom: 2.5px solid var(--ln); background: var(--bh, var(--bg2)); color: var(--bht, var(--ink)); font-weight: 900; }
.box > p:first-child, .box > ul:first-child, .box > ol:first-child, .box > div:first-child { margin-top: 14px; }
.box.pt { --bh: #fff0c2; --bht: #5a4300; }
.box.info { --bh: #e3efff; --bht: #123a7a; }
.box.ok { --bh: #dff6ee; --bht: #0b5a45; }
.box.warn { --bh: #ffe8e2; --bht: #8a2a12; }
:root[data-theme="dark"] .box .ttl { --bh: var(--bg2); --bht: var(--ink); }
.three li { border: 2.5px solid var(--ln); border-radius: var(--r-sm); box-shadow: var(--shadow-s); }
.three li::before { background: var(--yellow); color: #1d1a16; border: 2px solid var(--ln); font-weight: 900; width: 30px; height: 30px; }
.big > li { border: 2.5px solid var(--ln); box-shadow: var(--shadow-s); }
.big h3::before { background: var(--yellow); color: #1d1a16; border: 2px solid var(--ln); border-radius: 8px; padding: 0 7px; font-weight: 900; font-size: 14px; }
.ba .b, .ba .a { border: 2px solid var(--ln); border-radius: 12px; }
.ba .a { background: #dff6ee; }
.plain-lead > div { border: 2.5px solid var(--ln); box-shadow: var(--shadow-s); }
.plain-lead > div:first-child { background: #fff0c2; }
:root[data-theme="dark"] .plain-lead > div:first-child, :root[data-theme="dark"] .ba .a { background: var(--bg2); }
.plain-lead .lab { color: var(--ink); font-weight: 900; }
.keep > div { border: 2.5px solid var(--ln) !important; border-radius: var(--r-sm); box-shadow: var(--shadow-s); }
.faq { border-top: 0; gap: 10px; }
.faq details { border: 2.5px solid var(--ln); border-radius: var(--r-sm); background: var(--paper); box-shadow: var(--shadow-s); }
.faq details[open] summary { border-bottom: 2px dashed var(--line2); }
.todo { border-top: 0; }
.todo li { background: var(--paper); border: 2px solid var(--ln); border-radius: 12px; margin-bottom: 8px; padding: 10px 14px; }
.todo .when { border: 1.5px solid var(--ln); background: var(--yellow); color: #1d1a16; font-weight: 700; border-radius: 999px; }
.todo-progress { height: 10px; border: 2px solid var(--ln); border-radius: 999px; background: var(--paper); }
.todo-progress span { background: var(--green); }
.tbl-wrap, .gantt { border: 2.5px solid var(--ln); border-radius: var(--r-sm); box-shadow: var(--shadow-s); background: var(--paper); }
.tbl thead th { background: var(--bg2); color: var(--ink); border-bottom: 2.5px solid var(--ln); }
.hero-card { border: 2.5px solid var(--ln); box-shadow: var(--shadow); }
.cmp-row { border: 2.5px solid var(--ln) !important; box-shadow: var(--shadow-s); border-radius: var(--r) !important; }
.search-box { border: 3px solid var(--ln); border-radius: 16px; box-shadow: 4px 4px 0 rgba(0, 0, 0, .25); }
.toc-side { border: 2px solid var(--ln); border-radius: 14px; background: var(--paper); padding: 12px 14px; }
.toc-side b { color: var(--ink); font-weight: 900; font-family: var(--head); }
.toc-side a.on { color: var(--ink); background: var(--yellow); border-radius: 6px; padding-left: 6px; }
.toc-inline { border: 2px solid var(--ln); border-radius: 14px; }
.tl3 > div { border: 2.5px solid var(--ln); border-top: 10px solid var(--c); box-shadow: var(--shadow-s); }
.zk { border: 3px solid var(--ln) !important; box-shadow: var(--shadow); }
.kicker { border: 2px solid var(--ln); font-weight: 700; color: var(--ink); }

/* フッター */
.site-footer { background: var(--board); color: var(--chalk); border-top: 3px solid var(--ln); }
.site-footer .brand { color: var(--yellow); font-weight: 900; font-size: 20px; }
.site-footer h3 { color: var(--yellow); }
.site-footer a { color: var(--chalk); }

/* 上へ戻る：黄色の丸 */
.to-top { background: var(--yellow); color: #1d1a16; border: 2.5px solid var(--ln); box-shadow: var(--shadow-s); font-weight: 900; }
.to-top:hover, .to-top:focus-visible { background: var(--yellow); color: #1d1a16; }

/* 目的からさがす：アイコンのタイル（件数バッジつき） */
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.tile { position: relative; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 2px; padding: 14px 8px 12px; text-decoration: none; color: var(--ink); background: var(--paper); border: 2.5px solid var(--ln); border-radius: 16px; box-shadow: var(--shadow-s); border-bottom: 7px solid var(--c, var(--yellow)); transition: transform .15s; }
.tile:hover { transform: translate(-2px, -3px) rotate(-.4deg); }
.tile img { width: 64px; height: 64px; object-fit: contain; }
.tile b { font: 900 16px/1.3 var(--head); margin-top: 4px; }
.tile small { font-size: 12.5px; color: var(--ink2); line-height: 1.45; }
.tile i { position: absolute; top: 6px; right: 8px; font-style: normal; font-size: 12px; font-weight: 900; background: var(--c, var(--ln)); color: #fff; border-radius: 999px; padding: 0 8px; }
.sec-ico { width: 34px; height: 34px; object-fit: contain; flex: none; }
.hero-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0 0; }
.hero-chips a { text-decoration: none; font-size: 14px; font-weight: 700; color: var(--chalk); border: 1.5px solid rgba(244, 241, 232, .6); border-radius: 999px; padding: 4px 12px; background: rgba(255, 255, 255, .08); }
.hero-chips a:hover { background: var(--yellow); color: #1d1a16; border-color: var(--yellow); }
@media (max-width: 560px) { .tiles { grid-template-columns: repeat(3, 1fr); gap: 8px; } .tile { padding: 10px 4px 8px; } .tile img { width: 46px; height: 46px; } .tile b { font-size: 14px; } .tile small { display: none; } }

/* ヘッダーは英語指導法ラボと同じ2段：上にロゴとボタン、下にメニュー（スマホでは横にスクロール） */
:root { --header-h: 104px; }
.header-inner { flex-wrap: wrap; height: auto; padding-top: 8px; row-gap: 4px; }
.header-tools { margin-left: auto; }
.main-nav { display: flex !important; order: 3; width: 100%; margin-left: 0; gap: 4px; overflow-x: auto; scrollbar-width: none; padding: 2px 0 8px; }
.main-nav::-webkit-scrollbar { display: none; }
.main-nav a { flex: none; }
.lv-bar { display: none !important; }
.hero h1 .hl { display: inline; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
@media (min-width: 1100px) { .tiles { grid-template-columns: repeat(8, 1fr); } }
@media (max-width: 560px) { :root { --header-h: 100px; } .main-nav a { font-size: 14px; padding: 4px 9px; } }
.main-nav a { display: inline-flex; align-items: center; gap: 5px; }
.nav-ico { width: 22px; height: 22px; object-fit: contain; flex: none; }
.prose h2::before { position: static; bottom: auto; }
.tl3 li span { display: block; }
.tl3 li span .pg, .tl3 li span .chip { display: inline-block; }
.tl3 li > span { display: block; }
.board-head .facts span span { background: none; border: 0; padding: 0; border-radius: 0; }
.tl3-ok { --c: #00a88f; } .tl3-care { --c: #e8930c; } .tl3-ng { --c: #ef5644; }
/* スマホ：黒板トップの中身が画面幅を超えないように */
.hero-grid > *, .board-head .inner > * { min-width: 0; }
@media (max-width: 560px) { .lv-pick { grid-template-columns: 1fr 1fr; } .lv-pick a { padding: 12px 12px 10px; } .lv-pick b { font-size: 17px; } .hero h1 { font-size: 27px; } .hero .kicker { font-size: 12px; } .cd-table { font-size: 14px; } .cd-table td, .cd-table th { padding-left: 4px; padding-right: 4px; } .notice-bar a { font-size: 13px; } .three li { padding-left: 52px; } .box { padding: 0 14px 12px; } .box .ttl { margin: 0 -14px 10px; padding: 8px 14px; } .tl3 > div { padding: 12px 14px; } .card { padding: 16px; } .card .thumb { width: calc(100% + 32px); margin: -16px -16px 12px; } }

/* トップの「あなたはどれ？」：押せるボタンだと一目でわかるように（2026-11-02） */
.pick-ask { margin: 4px 0 10px; color: var(--chalk); font-weight: 700; font-size: 15px; line-height: 1.6; }
.pick-ask span { display: inline-block; background: var(--yellow); color: #1d1a16; font: 900 17px var(--head); padding: 2px 12px; border-radius: 8px; border: 2px solid #1d1a16; margin-right: 8px; transform: rotate(-2deg); }
.pick-ask span::after { content: ' ↓'; }
.lv-pick { grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 0; }
.lv-pick a { display: grid; grid-template-columns: 56px 1fr; grid-template-rows: auto auto; align-items: center; column-gap: 10px; padding: 12px 12px 0; border-bottom-width: 2.5px; border-bottom-color: var(--ln); overflow: hidden; color: var(--ink); }
.lv-pick a::after { content: none !important; }
.lv-pick img { width: 56px; height: 56px; object-fit: contain; }
.lv-pick .t b { display: block; font: 900 19px/1.3 var(--head); letter-spacing: .02em; }
.lv-pick .t small { display: block; color: var(--ink2); font-size: 13px; margin-top: 2px; }
.lv-pick .go, .parent-cta .go { grid-column: 1 / -1; display: flex; align-items: center; justify-content: center; gap: 6px; margin: 10px -12px 0; padding: 8px 10px; background: var(--c); color: #fff; font: 900 15px var(--head); border-top: 2.5px solid var(--ln); }
.lv-pick .go::after, .parent-cta .go::after { content: '→'; display: inline-block; animation: pick-nudge 1.4s ease-in-out infinite; }
.lv-pick a:hover .go, .lv-pick a:focus-visible .go { filter: brightness(1.08); text-decoration: underline; text-underline-offset: 3px; }
@keyframes pick-nudge { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(5px); } }
.parent-cta { display: flex; align-items: center; gap: 12px; margin-top: 14px; padding: 10px 0 10px 12px; background: var(--yellow); color: #1d1a16; border: 2.5px solid var(--ln); border-radius: 16px; box-shadow: 4px 4px 0 rgba(0, 0, 0, .35); text-decoration: none; transition: transform .15s; overflow: hidden; }
.parent-cta:hover { transform: translate(-2px, -3px); }
.parent-cta img { width: 52px; height: 52px; object-fit: contain; flex: none; }
.parent-cta b { display: block; font: 900 19px/1.3 var(--head); }
.parent-cta small { display: block; font-size: 13px; color: #3a352d; }
.parent-cta > span:not(.go) { flex: 1; min-width: 0; }
.parent-cta .go { --c: #1d1a16; margin: -10px 0 -10px auto; align-self: stretch; border-top: 0; border-left: 2.5px solid var(--ln); padding: 0 18px; flex: none; color: var(--yellow); }
@media (prefers-reduced-motion: reduce) { .lv-pick .go::after, .parent-cta .go::after { animation: none; } }
@media (max-width: 560px) {
  .lv-pick { gap: 10px; }
  .lv-pick a { grid-template-columns: 40px 1fr; padding: 10px 10px 0; column-gap: 8px; }
  .lv-pick img { width: 40px; height: 40px; }
  .lv-pick .t b { font-size: 16px; }
  .lv-pick .t small { font-size: 12px; }
  .lv-pick .go { margin: 8px -10px 0; font-size: 13px; padding: 7px 6px; }
  .parent-cta b { font-size: 17px; }
  .parent-cta .go { padding: 0 12px; }
}

/* フッターの「原田英語のサイト」：全サイトをボタンで */
.foot-harada { background: var(--board2); border: 2.5px solid rgba(244, 241, 232, .55); border-radius: 18px; padding: 18px 18px 8px; margin: 0 0 30px; }
.fh-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }
.fh-head h2 { margin: 0; color: var(--yellow); font-size: 24px; display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px; }
.fh-head h2 small { font: 700 14px var(--font); color: var(--chalk); }
.foot-harada h3 { color: var(--chalk); font-size: 15px; letter-spacing: .06em; margin: 16px 0 8px; }
.fh-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.site-footer .fh-list a { display: block; background: var(--paper); color: var(--ink); border: 2.5px solid #1d1a16; border-radius: 14px; box-shadow: 3px 3px 0 rgba(0, 0, 0, .4); padding: 10px 12px; text-decoration: none; transition: transform .12s; }
.site-footer .fh-list a:hover { transform: translate(-2px, -2px); text-decoration: none; }
.fh-list .tag { display: inline-block; font-size: 12px; font-weight: 900; background: var(--yellow); color: #1d1a16; border: 1.5px solid #1d1a16; border-radius: 999px; padding: 0 8px; }
.fh-list b { display: block; font: 900 16.5px/1.4 var(--head); margin: 4px 0 2px; }
.fh-list b::after { content: ' →'; color: var(--green); }
.fh-list small { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-size: 13px; color: var(--ink2); line-height: 1.6; }
/* フッター：原田英語・X の入口ボタン */
.foot-links { display: grid; gap: 12px; max-width: 290px; margin-top: 18px; }
.site-footer .foot-links a { display: flex; align-items: center; gap: 10px; min-width: 0; background: var(--paper); color: var(--ink); border: 2.5px solid #1d1a16; border-radius: 14px; box-shadow: 3px 3px 0 rgba(0, 0, 0, .4); padding: 8px 14px 8px 8px; text-decoration: none; transition: transform .12s; }
.site-footer .foot-links a:hover { transform: translate(-2px, -2px); text-decoration: none; }
.foot-links .fl-ic { flex: none; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; border: 2px solid #1d1a16; background: var(--yellow); color: #1d1a16; }
.foot-links a + a .fl-ic { background: #1d1a16; color: #fff; border-color: var(--ink); }
.foot-links .fl-ic svg { width: 22px; height: 22px; }
.foot-links b { display: block; font: 900 15.5px/1.3 var(--head); }
.foot-links small { display: block; font-size: 12.5px; color: var(--ink2); }
@media (max-width: 560px) { .fh-list { grid-template-columns: 1fr 1fr; gap: 8px; } .fh-list small { display: none; } .fh-list b { font-size: 14.5px; } .foot-harada { padding: 14px 12px 6px; } .fh-head h2 { font-size: 20px; } }
@media (max-width: 640px) { .zk-stage { aspect-ratio: auto !important; width: 100%; max-height: none; min-height: 440px; } }
@media (max-width: 560px) { .plan-tbl, .tbl { font-size: 14px; } }

/* 新旧比較：ひと目でわかるマーカー（黄色＝新しく入る・変わる、赤の取り消し線＝消える・変わる） */
.mk-new { background: linear-gradient(transparent 45%, rgba(255, 210, 63, .85) 45%); font-weight: 700; color: var(--ink); padding: 0 1px; }
.mk-old { background: linear-gradient(transparent 45%, rgba(255, 107, 91, .28) 45%); text-decoration: line-through; text-decoration-color: #e0402e; text-decoration-thickness: 2px; }
:root[data-theme="dark"] .mk-new { background: linear-gradient(transparent 45%, rgba(255, 210, 63, .45) 45%); }
.cmp-cols > .old, .cmp-cols > .new { border: 2px solid var(--ln); border-radius: 12px; padding: 10px 14px 12px; }
.cmp-cols > .old { background: var(--bg2); }
.cmp-cols > .new { background: #fffbe8; }
:root[data-theme="dark"] .cmp-cols > .new { background: var(--bg2); }
.cmp-cols .lab { display: inline-block; font-weight: 900; font-size: 13px; letter-spacing: .04em; border-radius: 999px; padding: 1px 10px; margin-bottom: 6px; border: 1.5px solid var(--ln); }
.cmp-cols .old .lab { background: #e9e3d6; color: #3a352d; }
.cmp-cols .new .lab { background: var(--yellow); color: #1d1a16; }
.cmp-cols .arrow { font-size: 22px; font-weight: 900; color: var(--ink); }
.cmp-legend { display: flex; flex-wrap: wrap; gap: 8px 18px; background: var(--paper); border: 2px solid var(--ln); border-radius: 12px; padding: 8px 14px; font-weight: 700; color: var(--ink); }

/* 資料室（2026-11-02）：公式PDFのボタン・教科ごとのマーカー比較タイル */
.cmp-tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; margin: 14px 0 22px; }
.cmp-tiles a { display: grid; grid-template-columns: 44px 1fr; grid-template-rows: auto auto; column-gap: 10px; align-items: center; padding: 10px 12px 0; background: var(--card); border: 2.5px solid var(--ln); border-radius: 14px; box-shadow: var(--shadow); color: var(--ink); text-decoration: none; overflow: hidden; transition: transform .15s; }
.cmp-tiles a:hover { transform: translate(-2px, -3px); }
.cmp-tiles img { width: 44px; height: 44px; object-fit: contain; }
.cmp-tiles .t b { display: block; font: 900 16px/1.35 var(--head); }
.cmp-tiles .t small { display: block; font-size: 13px; color: var(--ink2); }
.cmp-tiles .go { grid-column: 1 / -1; align-self: end; margin: 10px -12px 0; padding: 6px 10px; text-align: center; font: 900 14px var(--head); background: var(--yellow); color: #1d1a16; border-top: 2px solid var(--ln); }
.cmp-tiles .go::after { content: ' →'; }
.cmp-demo { margin: 6px 0 10px; }
.cmp-demo .cmp-row { margin: 0; }
.cmp-howto { list-style: none; padding: 0; margin: 10px 0; }
.cmp-howto li { margin: 6px 0; padding-left: 1.2em; position: relative; }
.cmp-howto li::before { content: '●'; position: absolute; left: 0; color: var(--ink2); font-size: .8em; top: .25em; }
.shiryo-lv { border-left: 8px solid var(--c); padding-left: 14px; }
.shiryo-lv .when { font-weight: 700; margin: 4px 0 10px; }
.shiryo-lv .when span { display: inline-block; margin-left: 8px; padding: 1px 10px; border-radius: 99px; background: var(--c); color: #fff; font-size: 13px; }
.doc { display: flex; align-items: center; gap: 10px; padding: 10px 12px; margin: 0 0 10px; background: var(--card); border: 2px solid var(--ln); border-radius: 12px; box-shadow: 3px 3px 0 var(--ln); color: var(--ink); text-decoration: none; transition: transform .15s; min-width: 0; }
.doc:hover { transform: translate(-1px, -2px); }
.doc .kind { flex: none; font: 900 12px var(--head); padding: 3px 7px; border-radius: 6px; background: #e8414f; color: #fff; border: 2px solid var(--ln); }
.doc .t { flex: 1; min-width: 0; }
.doc .t b { display: block; font-weight: 800; line-height: 1.4; overflow-wrap: anywhere; }
.doc .t small { display: block; color: var(--ink2); font-size: 13px; line-height: 1.5; }
.doc .ext { flex: none; font-weight: 900; }
.doc-main .doc { background: #fffbe8; border-width: 2.5px; padding: 14px; }
.doc-main .doc .t b { font: 900 18px/1.4 var(--head); }
.doc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 0 12px; }
@media (max-width: 560px) {
  .cmp-tiles { grid-template-columns: 1fr 1fr; gap: 10px; }
  .cmp-tiles a { grid-template-columns: 1fr; padding: 10px 8px 0; text-align: center; justify-items: center; }
  .cmp-tiles img { width: 40px; height: 40px; }
  .cmp-tiles .t b { font-size: 14px; }
  .cmp-tiles .t small { font-size: 12px; }
  .cmp-tiles .go { margin: 8px -8px 0; width: calc(100% + 16px); }
  .doc-grid { grid-template-columns: 1fr; }
  .shiryo-lv { padding-left: 10px; border-left-width: 6px; }
}

/* 資料室（2）：ページ内ジャンプ・解説カード・「比べる」近道 */
.shiryo-jump { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin: 4px 0 26px; }
.shiryo-jump a { display: flex; align-items: center; gap: 8px; padding: 10px; background: var(--card); border: 2.5px solid var(--ln); border-top: 8px solid var(--c); border-radius: 14px; box-shadow: var(--shadow); color: var(--ink); text-decoration: none; transition: transform .15s; min-width: 0; }
.shiryo-jump a:hover { transform: translate(-2px, -3px); }
.shiryo-jump img { width: 40px; height: 40px; object-fit: contain; flex: none; }
.shiryo-jump b { display: block; font: 900 15.5px/1.3 var(--head); }
.shiryo-jump small { display: block; font-size: 12px; color: var(--ink2); line-height: 1.4; }
.when-line span { display: inline-block; padding: 3px 12px; border-radius: 99px; background: var(--c); color: #fff; font-weight: 800; font-size: 14px; border: 2px solid var(--ln); }
.kdoc { display: flex; flex-direction: column; margin: 0 0 12px; }
.kdoc .doc { margin: 0; border-radius: 12px 12px 0 0; box-shadow: none; }
.kdoc .kcmp { display: block; padding: 5px 12px; background: var(--yellow); color: #1d1a16; font: 900 13.5px var(--head); text-decoration: none; border: 2px solid var(--ln); border-top: 0; border-radius: 0 0 12px 12px; box-shadow: 3px 3px 0 var(--ln); }
.kdoc .kcmp::after { content: ' →'; }
.kdoc .kcmp:hover { text-decoration: underline; }
.kdoc:not(:has(.kcmp)) .doc { border-radius: 12px; box-shadow: 3px 3px 0 var(--ln); }
@media (max-width: 900px) { .shiryo-jump { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .shiryo-jump { grid-template-columns: 1fr 1fr; gap: 8px; } .shiryo-jump a { padding: 8px; } .shiryo-jump img { width: 32px; height: 32px; } .shiryo-jump b { font-size: 14px; } }

/* 校種ページの「教科ごとの変更点」：小さな＋ではなく、押せるとわかるカードに（2026-11-02） */
.acc-hint { font-weight: 700; margin: 0 0 12px; }
.acc-hint b { background: linear-gradient(transparent 50%, rgba(255, 210, 63, .9) 50%); }
.acc.acc-cards { border-top: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; align-items: start; }
.acc.acc-cards > details { border: 2.5px solid var(--ln); border-radius: 16px; background: var(--card); box-shadow: var(--shadow); overflow: hidden; min-width: 0; }
.acc.acc-cards > details[open] { grid-column: 1 / -1; }
.acc.acc-cards > details > summary { display: grid; grid-template-columns: 48px 1fr; grid-template-rows: auto auto; column-gap: 12px; align-items: center; padding: 12px 14px 0; }
.acc.acc-cards > details > summary::after { content: none; }
.acc.acc-cards summary img { width: 48px; height: 48px; object-fit: contain; }
.acc.acc-cards summary .t { min-width: 0; }
.acc.acc-cards summary .t b { display: block; font: 900 18px/1.35 var(--head); color: var(--ink); }
.acc.acc-cards summary .t > span { display: block; font-size: 14.5px; line-height: 1.6; color: var(--ink2); margin-top: 2px; }
.acc.acc-cards summary .go { grid-column: 1 / -1; display: block; margin: 12px -14px 0; padding: 8px 10px; text-align: center; background: var(--c, var(--yellow)); color: #fff; font: 900 15px var(--head); border-top: 2.5px solid var(--ln); }
.acc.acc-cards summary .go .o::after { content: ' ▼'; }
.acc.acc-cards summary .go .c { display: none; }
.acc.acc-cards summary .go .c::after { content: ' ▲'; }
.acc.acc-cards details[open] summary .go { background: var(--ink); }
.acc.acc-cards details[open] summary .go .o { display: none; }
.acc.acc-cards details[open] summary .go .c { display: inline; }
.acc.acc-cards summary:hover .go { filter: brightness(1.08); text-decoration: underline; }
.acc.acc-cards .acc-body { padding: 4px 18px 18px; border-top: 2px dashed var(--line); }
@media (max-width: 640px) {
  .acc.acc-cards { grid-template-columns: 1fr; gap: 10px; }
  .acc.acc-cards > details > summary { grid-template-columns: 40px 1fr; padding: 10px 12px 0; }
  .acc.acc-cards summary img { width: 40px; height: 40px; }
  .acc.acc-cards summary .go { margin: 10px -12px 0; }
  .acc.acc-cards .acc-body { padding: 4px 12px 14px; }
}

/* 校種×教科のページ：1 どこが変わる？ → 2 解説PDF */
.subj-jump { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 0 0 22px; }
.subj-jump a { display: block; padding: 12px 14px 12px 54px; position: relative; background: var(--card); border: 2.5px solid var(--ln); border-radius: 14px; box-shadow: var(--shadow); color: var(--ink); text-decoration: none; font: 900 17px/1.35 var(--head); }
.subj-jump a.on { background: var(--yellow); color: #1d1a16; }
.subj-jump a b { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); color: #fff; font-size: 16px; }
.subj-jump small { display: block; font: 700 13px var(--body, inherit); color: inherit; opacity: .8; }
.pick-h small { display: block; font-size: 13.5px; font-weight: 700; color: var(--ink2); margin-top: 2px; }
.kcards a { border-top: 8px solid var(--c); }

/* カード内のラベル（チップ）がはみ出さないように折り返す */
.card .chips, .box .chips { flex-wrap: wrap; min-width: 0; }
.card .chip, .box .chip, .tile .chip, .doc .chip { white-space: normal; max-width: 100%; overflow-wrap: anywhere; }
.card, .box { min-width: 0; }

/* 長い文字のチップ（関連の授業名など）がスマホで画面の外へはみ出さないよう、折り返す（2026-11-02 全ページ検査で22ページ） */
.chip { max-width: 100%; white-space: normal; overflow-wrap: anywhere; text-align: left; }
.chips { flex-wrap: wrap; }

/* 校種×教科のページ：教科アイコンは小さめ、スマホでは出さない */
.board-head img.subj-art { width: 200px; height: 200px; object-fit: contain; margin: 0 auto; display: block; }
.board-head .inner:has(.subj-art) { align-items: center; }
@media (max-width: 640px) { .board-head img.subj-art { width: 96px; height: 96px; } .subj-jump { grid-template-columns: 1fr; gap: 8px; } .subj-jump a { font-size: 16px; } }

/* 前の「＋」版の規則（.acc summary span）がカードに効かないように */
.acc.acc-cards summary .t { grid-column: 2; }
.acc.acc-cards summary .go, .acc.acc-cards summary .go span { grid-column: 1 / -1; color: #fff; font-size: 15px; }
.acc.acc-cards summary .go .o, .acc.acc-cards summary .go .c { grid-column: auto; }

/* =========================================================
   ダウンロードコーナー（まるごとPDF）とトップの入口（2026-11-03）
   ========================================================= */
.board-head .hero-art { border: 2.5px solid var(--ln); box-shadow: var(--shadow); border-radius: 14px; }
.dl-wrap { padding-bottom: 40px; }
.dl-sec { margin: 40px 0 0; }
.dl-free { display: grid; grid-template-columns: 1fr 150px; gap: 22px; align-items: center; margin: 28px 0 0; background: var(--paper); border: 2.5px solid var(--ln); border-radius: var(--r); box-shadow: var(--shadow); padding: 20px 24px; border-left: 12px solid var(--yellow); }
.dl-free .badge { display: inline-block; background: var(--ln); color: var(--yellow); font-size: 13px; font-weight: 700; padding: 2px 10px; border-radius: 6px; }
.dl-free h2 { font-size: clamp(20px, 2.6vw, 27px); margin: 8px 0 6px; }
.dl-free ul { margin: 0; padding-left: 1.2em; }
.dl-free li { margin: 2px 0; }
.dl-free .qrw { text-align: center; }
.dl-free .qrw svg { width: 130px; height: 130px; border: 2px solid var(--ln); border-radius: 8px; background: #fff; }
.dl-free .qrw small { display: block; font-size: 12px; color: var(--ink2); line-height: 1.5; margin-top: 4px; }
.dl-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 14px 0 22px; }
.board-head h1 .y { white-space: nowrap; }
.dl-tabs button { display: grid; grid-template-columns: 56px 1fr; grid-template-rows: auto auto; column-gap: 10px; align-items: center; text-align: left; padding: 10px 12px; border: 2.5px solid var(--ln) !important; border-radius: 14px !important; background: var(--paper) !important; color: var(--ink) !important; box-shadow: var(--shadow-s); border-bottom: 7px solid var(--c) !important; cursor: pointer; transition: transform .15s; }
.dl-tabs button img { grid-row: 1 / 3; width: 56px; height: 56px; }
.dl-tabs button b { font-family: var(--head); font-size: 19px; line-height: 1.3; align-self: end; }
.dl-tabs button small { font-size: 12.5px; color: var(--ink2); line-height: 1.4; align-self: start; }
.dl-tabs button:hover { transform: translate(-1px, -2px); }
.dl-tabs button[aria-selected="true"] { background: var(--c) !important; color: #fff !important; transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ln); }
.dl-tabs button[aria-selected="true"] small { color: rgba(255, 255, 255, .9); }
.dl-panel { border-top: 6px solid var(--c); padding-top: 6px; }
.dl-h { display: flex; align-items: center; gap: 10px; font-size: clamp(19px, 2.3vw, 24px); margin: 30px 0 12px; }
.dl-h .n { flex-shrink: 0; width: 38px; height: 38px; display: grid; place-items: center; background: var(--c); color: #fff; border: 2.5px solid var(--ln); border-radius: 10px; box-shadow: 2px 2px 0 var(--ln); font-size: 18px; }
.dl-note { color: var(--ink2); font-size: 14.5px; margin: -4px 0 12px; }
.dl-bigs { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.dl-big { display: grid; grid-template-columns: 170px 1fr; gap: 18px; background: var(--paper); border: 2.5px solid var(--ln); border-radius: var(--r); box-shadow: var(--shadow); padding: 16px; }
.dl-big .th img, .dl-subj .th img { width: 100%; height: auto; border: 1.5px solid var(--ln); border-radius: 6px; box-shadow: 3px 3px 0 rgba(0, 0, 0, .25); background: #fff; transition: transform .15s; }
.dl-big .th:hover img, .dl-subj .th:hover img { transform: rotate(-1.5deg) translateY(-3px); }
.dl-big .kick { display: inline-block; font-size: 12.5px; font-weight: 700; background: var(--yellow); color: #1d1a16; border: 1.5px solid var(--ln); border-radius: 6px; padding: 0 8px; }
.dl-big h3 { font-size: 21px; margin: 8px 0 2px; line-height: 1.4; }
.dl-big .meta { font-size: 13px; color: var(--ink2); margin: 0 0 6px; }
.dl-big p { font-size: 14.5px; margin: 0 0 10px; }
.dl-big .acts, .dl-subj .acts { display: flex; flex-wrap: wrap; gap: 8px; }
.th-ph { display: grid; place-items: center; aspect-ratio: 300 / 424; border: 2px dashed var(--line2); border-radius: 6px; color: var(--ink3); font-weight: 900; font-size: 22px; background: var(--card); }
.dl-zip { display: flex; align-items: center; gap: 14px; margin: 18px 0 0; text-decoration: none; color: var(--ink); background: var(--bg2); border: 2.5px dashed var(--ln); border-radius: var(--r); padding: 12px 18px; }
.dl-zip .ic { flex-shrink: 0; width: 54px; height: 54px; display: grid; place-items: center; background: var(--ln); color: var(--yellow); border-radius: 10px; font-weight: 900; }
.dl-zip .t b { display: block; font-size: 17px; font-family: var(--head); }
.dl-zip .t small { color: var(--ink2); font-size: 13.5px; }
.dl-zip .go, .dl-row .go { margin-left: auto; font-size: 22px; font-weight: 900; }
.dl-zip:hover { border-style: solid; }
.dl-subjs { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.dl-subj { display: grid; grid-template-columns: 96px 1fr; gap: 12px; background: var(--paper); border: 2.5px solid var(--ln); border-radius: 14px; box-shadow: var(--shadow-s); padding: 12px; border-top: 7px solid var(--c); }
.dl-subj .no { font-size: 12px; font-weight: 900; color: var(--ink3); }
.dl-subj h3 { font-size: 17.5px; margin: 0 0 4px; line-height: 1.4; }
.dl-subj p { font-size: 13px; color: var(--ink2); margin: 0 0 8px; line-height: 1.6; }
.dl-subj .btn.sm { padding: 4px 10px; font-size: 12.5px; }
.dl-off { background: var(--paper); border: 2px solid var(--ln); border-radius: 14px; padding: 14px 16px; margin: 0 0 14px; }
.dl-off h3 { font-size: 17px; margin: 0 0 10px; }
.dl-off .docs { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 8px; }
.dl-off .docs a { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--ink); border: 1.5px solid var(--line2); border-radius: 10px; padding: 8px 10px; font-size: 14px; line-height: 1.5; background: var(--card); }
.dl-off .docs a:hover { border-color: var(--ln); }
.dl-off .docs .k, .dl-row .k { flex-shrink: 0; font-size: 11px; font-weight: 900; color: #fff; background: #d63a3a; border-radius: 4px; padding: 1px 6px; }
.dl-off .docs .ext { margin-left: auto; color: var(--ink3); }
.dl-off .docs small { color: var(--ink3); font-size: 12px; }
.dl-rows { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 10px; }
.dl-row { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); background: var(--paper); border: 2px solid var(--ln); border-radius: 12px; padding: 10px 14px; box-shadow: 2px 2px 0 var(--ln); }
.dl-row:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--ln); }
.dl-row .t b { display: block; font-size: 15px; line-height: 1.5; }
.dl-row .t small { display: block; font-size: 12.5px; color: var(--ink2); line-height: 1.5; }
.dl-mx th, .dl-mx td { text-align: center; vertical-align: middle; }
.dl-mx tbody th { text-align: left; white-space: nowrap; }
.dl-mx td a { display: inline-block; margin: 2px; padding: 3px 10px; border: 2px solid var(--ln); border-radius: 8px; text-decoration: none; color: var(--ink); background: var(--paper); font-weight: 700; font-size: 14px; }
.dl-mx td a small { font-weight: 400; color: var(--ink2); margin-left: 3px; font-size: 11.5px; }
.dl-mx td a:hover, .dl-mx td a.hot { background: var(--yellow); color: #1d1a16; }
.dl-mx th.lv-sho { background: var(--sho); color: #fff; } .dl-mx th.lv-chu { background: var(--chu); color: #fff; } .dl-mx th.lv-ko { background: var(--ko); color: #fff; }
/* トップの入口 */
.home-dl { padding: 26px 0 0; margin-bottom: 34px; position: relative; z-index: 1; }
.home-dl-in { display: grid; grid-template-columns: 1.1fr .9fr; gap: 26px; align-items: center; text-decoration: none; color: var(--chalk); background: var(--board); border: 3px solid var(--ln); border-radius: 20px; box-shadow: 6px 6px 0 var(--ln); padding: 26px 30px; position: relative; overflow: hidden; border-bottom: 10px solid #8a6d4a; transition: transform .15s; }
.home-dl-in:hover { transform: translate(-2px, -3px); }
.home-dl .kick { display: inline-block; background: var(--yellow); color: #1d1a16; font-weight: 900; font-size: 13.5px; border-radius: 6px; padding: 2px 10px; border: 2px solid var(--ln); }
.home-dl h2 { color: #fff; font-size: clamp(28px, 4.2vw, 46px); line-height: 1.25; margin: 12px 0 10px; }
.home-dl h2 .y { color: var(--chalk-y); display: inline-block; }
.home-dl .big { font-size: 17px; color: var(--chalk2); margin: 0 0 16px; line-height: 1.8; }
.home-dl .big b { color: #fff; }
.home-dl .big b.n { color: var(--chalk-y); font-size: 1.5em; }
.home-dl .btn.pop { background: var(--yellow); color: #1d1a16; border: 2.5px solid var(--ln); font-weight: 900; font-size: 17px; padding: 12px 22px; box-shadow: 3px 3px 0 var(--ln); }
.home-dl .covers { display: flex; justify-content: center; align-items: flex-end; height: 100%; min-height: 230px; }
.home-dl .cv { width: 31%; max-width: 150px; margin: 0 -4%; transform: rotate(-7deg) translateY(10px); }
.home-dl .cv:nth-child(2) { transform: rotate(-2deg); z-index: 2; }
.home-dl .cv:nth-child(3) { transform: rotate(4deg) translateY(4px); z-index: 1; }
.home-dl .cv:nth-child(4) { transform: rotate(9deg) translateY(14px); }
.home-dl .cv img, .home-dl .cv .th-ph { width: 100%; height: auto; border: 2px solid var(--ln); border-radius: 6px; box-shadow: 4px 4px 0 rgba(0, 0, 0, .4); background: #fff; display: block; }
@media (max-width: 900px) {
  .dl-tabs { grid-template-columns: 1fr 1fr; gap: 8px; }
  .dl-tabs button { grid-template-columns: 40px 1fr; padding: 6px 8px; border-bottom-width: 5px !important; }
  .dl-tabs button img { width: 40px; height: 40px; }
  .dl-tabs button b { font-size: 16px; }
  .dl-tabs button small { display: none; }
  .dl-bigs { grid-template-columns: 1fr; }
  .home-dl-in { grid-template-columns: 1fr; padding: 20px 18px; }
  .home-dl .covers { min-height: 0; order: -1; }
}
@media (max-width: 560px) {
  .dl-free { grid-template-columns: 1fr; padding: 16px; }
  .dl-free .qrw { display: none; }
  .dl-big { grid-template-columns: 110px 1fr; gap: 12px; padding: 12px; }
  .dl-big h3 { font-size: 17px; }
  .dl-subjs { grid-template-columns: 1fr; }
  .dl-rows { grid-template-columns: 1fr; }
  .dl-off .docs { grid-template-columns: 1fr; }
}
.dl-road { margin: 28px 0 0; background: var(--board); color: var(--chalk); border: 3px solid var(--ln); border-radius: var(--r); box-shadow: var(--shadow); padding: 22px 26px; border-bottom: 9px solid #8a6d4a; }
.dl-road .badge { display: inline-block; background: var(--coral); color: #fff; font-weight: 900; font-size: 14px; padding: 3px 12px; border-radius: 6px; border: 2px solid var(--ln); letter-spacing: .1em; }
.dl-road h2 { color: #fff; font-size: clamp(22px, 3vw, 32px); margin: 10px 0 6px; }
.dl-road h2 .mk { color: #1d1a16; background: var(--yellow); padding: 0 8px; border-radius: 6px; margin-left: 6px; }
.dl-road p { color: var(--chalk2); margin: 0 0 14px; }
.dl-road p b { color: var(--chalk-y); }
.dl-road .road { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.dl-road .road li { display: grid; grid-template-columns: 112px 1fr; gap: 12px; align-items: center; background: rgba(255, 255, 255, .07); border: 1.5px solid rgba(255, 255, 255, .25); border-radius: 10px; padding: 8px 12px; }
.dl-road .road b { text-align: center; font-size: 14px; border-radius: 6px; padding: 2px 6px; border: 2px solid var(--ln); }
.dl-road .road .ok b { background: var(--green); color: #fff; }
.dl-road .road .now b { background: var(--yellow); color: #1d1a16; }
.dl-road .road .next b { background: #fff; color: #1d1a16; }
.dl-road .road span { color: #fff; font-size: 15px; line-height: 1.6; }
/* 2026-11-03 入口が大きすぎ・太字で改行される、の声を受けて小さく */
.home-dl-in { grid-template-columns: 1.3fr .7fr; padding: 20px 26px; gap: 18px; }
/* スマホでは1列（上の2列指定が、前に書いたスマホ用の1列を打ち消していた） */
@media (max-width: 760px) { .home-dl-in { grid-template-columns: 1fr; padding: 18px 16px; } .home-dl .covers { min-height: 0; order: -1; } .home-dl .cv { max-width: 90px; } }
.home-dl h2 { font-size: clamp(22px, 2.8vw, 30px); margin: 8px 0 6px; }
.home-dl .big { font-size: 15.5px; margin: 0 0 12px; }
.home-dl p.big { display: block !important; padding: 0 !important; list-style: none; counter-reset: none; }
.home-dl .big b, .home-dl .big b.n { display: inline !important; margin: 0 !important; }
.home-dl .big b.n { font-size: 1.25em; }
.home-dl .covers { min-height: 160px; }
.home-dl .cv { max-width: 110px; }
.home-dl .btn.pop { font-size: 15.5px; padding: 9px 18px; }
.home-dl .soon { display: inline-block; background: var(--coral); color: #fff; font-weight: 900; border: 2px solid var(--ln); border-radius: 8px; padding: 3px 12px; margin: 0 0 10px; font-size: 15px; }
@media (max-width: 560px) { .dl-road { padding: 16px; } .dl-road .road li { grid-template-columns: 1fr; gap: 4px; } .dl-road .road b { justify-self: start; } }
/* 校種えらび：目立たせる（「小学校しかないの？」と誤解されないように） */
.dl-pick { background: var(--yellow); border: 3px solid var(--ln); border-radius: var(--r); box-shadow: var(--shadow); padding: 18px 22px 6px; }
.dl-pick-h { display: flex; align-items: center; gap: 14px; margin: 0 0 4px; font-size: clamp(22px, 3vw, 30px); color: #1d1a16; }
.dl-pick-h .arw { flex-shrink: 0; width: 52px; height: 52px; display: grid; place-items: center; background: var(--ln); color: var(--yellow); border-radius: 50%; font-size: 30px; animation: dl-bob 1.4s ease-in-out infinite; }
.dl-pick-h .mk { background: #fff; padding: 0 6px; border-radius: 6px; border: 2px solid var(--ln); }
.dl-pick-h small { display: block; font-size: 15px; font-weight: 700; color: #3a332a; margin-top: 4px; font-family: var(--font); }
@keyframes dl-bob { 50% { transform: translateY(5px); } }
@media (prefers-reduced-motion: reduce) { .dl-pick-h .arw { animation: none; } }
.dl-pick .dl-tabs { margin-bottom: 14px; }
.dl-pick .dl-tabs button b { font-size: 21px; }
.dl-pick .dl-panel { background: var(--bg); margin: 0 -22px; padding: 6px 22px 18px; border-radius: 0 0 calc(var(--r) - 3px) calc(var(--r) - 3px); }
.dl-now { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; margin: 14px 0 0; font-size: 17px; font-weight: 700; }
.dl-now b { background: var(--c); color: #fff; padding: 2px 12px; border-radius: 8px; border: 2px solid var(--ln); font-size: 19px; }
.dl-now span { font-size: 13.5px; color: var(--ink2); font-weight: 400; }
@media (max-width: 560px) { .dl-pick { padding: 14px 12px 4px; } .dl-pick .dl-panel { margin: 0 -12px; padding: 4px 12px 14px; } .dl-pick-h .arw { width: 40px; height: 40px; font-size: 22px; } .dl-pick-h small { font-size: 13px; } }
@media print { .dl-tabs, .home-dl { display: none; } }
/* 上のメニュー：PCでは横にはみ出して切れないよう2段に折り返す（スマホは横スクロールのまま、右端を少しぼかして続きがあると分かるように） */
@media (min-width: 761px) {
  .main-nav { flex-wrap: wrap; overflow: visible; row-gap: 4px; gap: 4px 2px; }
  .main-nav a { padding: 4px 9px; }
}
@media (max-width: 760px) {
  .main-nav { -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent); mask-image: linear-gradient(90deg, #000 88%, transparent); }
}

/* ===== AIプロンプト集（/prompt/）：英語指導法ラボと同じ太線・ずらし影のカード ===== */
.pc-catnav { margin: 14px 0 4px; }
.pc-list { display: grid; gap: 18px; margin: 14px 0; }
.pc { background: var(--paper); border: 2.5px solid var(--ln); border-radius: var(--r); box-shadow: var(--shadow); padding: 18px 20px 14px; scroll-margin-top: calc(var(--header-h, 70px) + 16px); }
.pc:target { outline: 4px solid var(--yellow); outline-offset: 2px; }
.pc-head { display: flex; gap: 12px; align-items: flex-start; }
.pc-head img { flex: none; width: 48px; height: 48px; object-fit: contain; }
.pc-head > div { min-width: 0; flex: 1; }
.pc h3 { margin: 0; font: 900 20px/1.4 var(--head); }
.pc-sub { margin: 2px 0 6px; color: var(--ink2); font-size: 15px; }
.pc-meta { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; font-size: 13.5px; color: var(--ink2); }
.pc-meta .lvl { color: #b07800; font-weight: 700; letter-spacing: .02em; }
.pc-box { position: relative; margin: 12px 0 8px; }
.pc-text { white-space: pre-wrap; word-break: break-word; margin: 0; background: var(--bg2); border: 2px solid var(--ln); border-radius: var(--r-sm); padding: 14px 16px; font: 400 15px/1.85 var(--font); color: var(--ink); max-height: 15.5em; overflow: hidden; }
.pc.long:not(.open) .pc-text { -webkit-mask-image: linear-gradient(#000 70%, transparent); mask-image: linear-gradient(#000 70%, transparent); }
.pc.open .pc-text { max-height: none; }
.pc-more { position: absolute; left: 50%; bottom: -12px; transform: translateX(-50%); font: 700 14px/1 var(--head); background: var(--yellow); color: #1d1a16; border: 2px solid var(--ln); border-radius: 999px; padding: 8px 16px; box-shadow: var(--shadow-s); cursor: pointer; }
.pc.open .pc-more { position: static; transform: none; display: block; margin: 8px auto 0; }
mark.slot { background: var(--mark); color: inherit; border-radius: 4px; padding: 0 2px; font-weight: 700; }
mark.slot.pack { background: rgba(61, 139, 253, .18); }
mark.slot.filled { background: rgba(0, 168, 143, .2); text-decoration: underline 2px rgba(0, 168, 143, .6); text-underline-offset: 3px; }
.pc-fill, .pc-tips { margin: 14px 0 0; border: 2px dashed var(--line2); border-radius: var(--r-sm); padding: 0 14px; }
.pc-fill[open] { border-style: solid; border-color: var(--ln); background: var(--bg); }
.pc-fill > summary, .pc-tips > summary { cursor: pointer; padding: 10px 0; font: 700 15.5px/1.4 var(--head); }
.pc-tips { border: 0; padding: 0; margin-top: 8px; }
.pc-tips > summary { font-size: 14.5px; color: var(--ink2); padding: 6px 0; }
.pc-tips p { font-size: 15px; margin: 4px 0 8px; }
.pc-fields { padding: 0 0 12px; display: grid; gap: 10px; }
.pc-field { display: grid; grid-template-columns: 9em 1fr; gap: 10px; align-items: start; }
.pc-field label { font-weight: 700; font-size: 14.5px; padding-top: 8px; }
.pc-field input, .pc-field textarea, .pc-field select, .pc-my select, .pc-my input, .pk-sel, .pc-search input { width: 100%; font: inherit; font-size: 15.5px; padding: 8px 10px; border: 2px solid var(--ln); border-radius: 10px; background: var(--paper); color: var(--ink); min-width: 0; }
.pc-field .small { grid-column: 1 / -1; margin: 0; }
.pc-packf .small { grid-column: 2; }
.pc-own { margin-top: 6px; grid-column: 2; }
.pc-fields > p { margin: 0; }
.pc-acts { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 14px; }
.pc-copy { font: 900 17px/1 var(--head); padding: 13px 26px; border: 2.5px solid var(--ln); box-shadow: var(--shadow-s); border-radius: 12px; }
.pc-copy:active { transform: translate(2px, 2px); box-shadow: none; }
.pc-link { color: var(--ink2); }
.pc-my { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; background: var(--paper); border: 2.5px solid var(--ln); border-radius: var(--r-sm); box-shadow: var(--shadow-s); padding: 12px 16px; margin: 14px 0; }
.pc-my > b { font: 900 16px/1 var(--head); background: var(--yellow); color: #1d1a16; border: 2px solid var(--ln); border-radius: 8px; padding: 6px 10px; }
.pc-my label { display: flex; align-items: center; gap: 6px; font-weight: 700; font-size: 14.5px; }
.pc-my select, .pc-my input { width: auto; max-width: 100%; }
.pc-my .small { flex-basis: 100%; }
.pc-filter { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 12px 0; }
.pc-filter .seg { flex-wrap: wrap; }
.pc-count { font: 900 16px/1 var(--head); margin-left: auto; }
.pc-search { margin: 6px 0 10px; }
.pc-search input { font-size: 17px; padding: 12px 14px; }
.pc-steps { list-style: none; counter-reset: st; padding: 0; margin: 10px 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.pc-steps li { counter-increment: st; position: relative; background: var(--paper); border: 2.5px solid var(--ln); border-radius: var(--r); box-shadow: var(--shadow-s); padding: 18px 16px 14px 62px; }
.pc-steps li::before { content: counter(st); position: absolute; left: 14px; top: 14px; width: 36px; height: 36px; border-radius: 50%; background: var(--yellow); color: #1d1a16; border: 2.5px solid var(--ln); font: 900 19px/31px var(--head); text-align: center; }
.pc-steps b { display: block; font: 900 18px/1.4 var(--head); }
.pc-steps span { display: block; font-size: 15px; color: var(--ink2); margin-top: 4px; }
.pc-promise { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.pc-promise > div { background: var(--paper); border: 2.5px solid var(--ln); border-radius: var(--r); box-shadow: var(--shadow-s); padding: 16px; border-top: 8px solid var(--coral); }
.pc-promise b { display: block; font: 900 18px/1.4 var(--head); }
.pc-promise span { display: block; font-size: 15px; color: var(--ink2); margin-top: 4px; }
.pc-aud { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.pk-box { background: var(--paper); border: 2.5px solid var(--ln); border-radius: var(--r); box-shadow: var(--shadow); padding: 16px 18px; }
.pk-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.pk-row label { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-weight: 700; flex: 1 1 320px; min-width: 0; }
.pk-sel { flex: 1; width: auto; }
.pk-out { max-height: 260px; overflow: auto; margin: 12px 0 6px; }
.pc-toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 160%); z-index: 200; width: max-content; max-width: min(560px, calc(100vw - 32px)); background: var(--board); color: var(--chalk); border: 2.5px solid var(--ln); border-radius: 14px; box-shadow: var(--shadow); padding: 12px 18px; font-weight: 700; font-size: 15px; transition: transform .25s; pointer-events: none; }
.pc-toast.show { transform: translate(-50%, 0); }
@media (max-width: 860px) { .pc-steps, .pc-promise { grid-template-columns: 1fr; } }
@media (max-width: 560px) {
  .pc { padding: 14px 14px 12px; box-shadow: var(--shadow-s); }
  .pc h3 { font-size: 18px; }
  .pc-head img { width: 40px; height: 40px; }
  .pc-text { font-size: 14.5px; padding: 12px; }
  .pc-field { grid-template-columns: 1fr; gap: 4px; }
  .pc-field label { padding-top: 0; }
  .pc-packf .small, .pc-own { grid-column: 1; }
  .pc-copy { flex: 1; }
  .pc-count { margin-left: 0; }
}
/* トップの「サイトの更新履歴」 */
.upd-list { list-style: none; margin: 0; padding: 0; background: var(--paper); border: 2.5px solid var(--ln); border-radius: var(--r); box-shadow: var(--shadow-s); }
.upd-list li { border-top: 1.5px dashed var(--line2); }
.upd-list li:first-child { border-top: 0; }
.upd-list details > summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: baseline; padding: 12px 16px; }
.upd-list details > summary::-webkit-details-marker { display: none; }
.upd-list time { font: 700 14px/1.4 var(--head); color: var(--ink2); white-space: nowrap; }
.upd-list .t { font-weight: 700; font-size: 16px; line-height: 1.5; }
.upd-list .new { font: 900 11.5px/1 var(--head); background: var(--coral); color: #fff; border-radius: 999px; padding: 3px 7px; margin-right: 6px; vertical-align: 2px; }
.upd-list summary::after { content: '＋'; font-weight: 900; color: var(--ink3); }
.upd-list details[open] summary::after { content: '－'; }
.upd-list .b { padding: 0 16px 14px; margin: 0; font-size: 15px; color: var(--ink2); line-height: 1.8; }
@media (max-width: 560px) { .upd-list details > summary { grid-template-columns: 1fr auto; gap: 2px 8px; padding: 10px 12px; } .upd-list time { grid-column: 1; } .upd-list .t { grid-column: 1; grid-row: 2; } .upd-list summary::after { grid-row: 1 / 3; grid-column: 2; align-self: center; } }

/* ===== 教育ニュース（/kyoiku/） ===== */
.en-wrap { padding: 26px 0 10px; }
.en-lv { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 22px; }
.en-lv a { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); background: var(--paper, var(--card)); border: 2.5px solid var(--ln, var(--line2)); border-bottom: 6px solid var(--c); border-radius: 14px; padding: 10px 12px; box-shadow: var(--shadow-s); transition: transform .12s; }
.en-lv a:hover { transform: translate(-2px, -2px); }
.en-lv a[aria-current] { background: var(--yellow); color: #1d1a16; }
.en-lv b { display: block; font-family: var(--head); font-size: 15.5px; }
.en-lv small { color: var(--ink2); font-size: 12.5px; }
.en-lv a[aria-current] small { color: #57514a; }
.en-lv img { flex-shrink: 0; }
.en-filter { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 14px; margin-bottom: 8px; }
.en-filter .seg { margin-bottom: 8px; }
.en-filter .seg button { display: inline-flex; align-items: center; gap: 5px; }
.en-filter .seg button img { width: 18px; height: 18px; }
.en-count { font-weight: 700; font-size: 14px; color: var(--ink2); margin-bottom: 8px; }
.en-day { margin: 8px 0 26px; }
.en-day-h { font-size: 17px; margin: 0 0 12px; display: flex; align-items: center; gap: 10px; }
.en-day-h span { background: var(--board); color: var(--chalk); border-radius: 999px; padding: 3px 14px; font-family: var(--head); letter-spacing: .04em; }
.en-day-h::after { content: ''; flex: 1; border-top: 2px dashed var(--line2); }
.en-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.en-card { background: var(--paper, var(--card)); border: 2.5px solid var(--ln, var(--line2)); border-radius: var(--r); box-shadow: var(--shadow-s); padding: 16px 18px 14px; display: flex; flex-direction: column; min-width: 0; scroll-margin-top: 90px; }
.en-card:target { outline: 4px solid var(--yellow); }
.en-card[data-lv~="sho"] { border-top: 6px solid var(--sho); }
.en-card[data-lv~="chu"]:not([data-lv~="sho"]) { border-top: 6px solid var(--chu); }
.en-card[data-lv="ko"] { border-top: 6px solid var(--ko); }
.en-card[data-lv="all"] { border-top: 6px solid var(--all); }
.en-meta { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink2); flex-wrap: wrap; }
.en-meta .en-ico { width: 26px; height: 26px; }
.en-cat { font-weight: 700; color: var(--ink); }
.en-meta time { margin-left: auto; }
.en-meta .new { font: 900 11px/1 var(--head); background: var(--coral, #e8414f); color: #fff; border-radius: 999px; padding: 3px 7px; }
.en-card h3 { font-size: 18px; line-height: 1.5; margin: 8px 0 6px; }
.en-card h3 a { color: inherit; text-decoration: none; }
.en-card h3 a:hover { text-decoration: underline; }
.en-card .chips { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 8px; }
.en-sum { margin: 0 0 10px; font-size: 15.5px; line-height: 1.85; }
.en-point { background: color-mix(in srgb, var(--yellow, #ffe14d) 22%, var(--paper, #fff)); border: 2px solid var(--ln, var(--line2)); border-radius: 10px; padding: 8px 12px; margin-bottom: 10px; }
.en-point b { font-family: var(--head); font-size: 13.5px; }
.en-point p { margin: 2px 0 0; font-size: 14.5px; line-height: 1.75; }
.en-foot { margin-top: auto; display: grid; gap: 4px; font-size: 13px; }
.en-src, .en-rel { display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: baseline; }
.en-src > span, .en-rel > span { color: var(--ink3); font-size: 12px; }
.en-src a, .en-rel a { color: var(--link); overflow-wrap: anywhere; }
.en-months { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 10px 0 18px; }
.en-months b { margin-right: 4px; }
.en-policy ul { margin: 6px 0 0; padding-left: 1.2em; font-size: 14px; }
.en-daily { font: 700 12px/1 var(--head); background: var(--yellow); color: #1d1a16; border: 2px solid var(--ln, #1d1a16); border-radius: 999px; padding: 4px 9px; margin-left: 10px; vertical-align: 4px; }
.en-home .en-card h3 { font-size: 16.5px; }
.en-home .en-sum { font-size: 14.5px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin: 0; }
.en-home .en-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.en-lv-mini { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
@media (max-width: 1000px) { .en-home .en-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 760px) { .en-lv { grid-template-columns: repeat(2, 1fr); } .en-grid, .en-home .en-grid { grid-template-columns: 1fr; } .en-lv img { width: 36px; height: 36px; } }

/* 校種ページ・トップの「英語の先生はこちら」（中学校のページに英語がない、と言われないように） */
.eigo-cta { display: grid; grid-template-columns: 72px 1fr; gap: 10px 16px; align-items: center; margin: 24px 0 0; padding: 16px 18px; background: var(--yellow); color: #1d1a16; border: 2.5px solid var(--ln); border-radius: 16px; box-shadow: 5px 5px 0 rgba(0, 0, 0, .35); }
.eigo-cta img { width: 72px; height: 72px; object-fit: contain; }
.eigo-cta .t b { display: block; font: 900 22px/1.35 var(--head); }
.eigo-cta .t .mk { background: #fff; padding: 0 6px; border: 2px solid #1d1a16; border-radius: 6px; margin: 0 2px; }
.eigo-cta .t small { display: block; font-size: 14px; color: #3a352d; margin-top: 2px; }
.eigo-cta .links { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px; }
.eigo-cta .links a { display: inline-block; padding: 8px 14px; background: #fff; color: #1d1a16; border: 2px solid #1d1a16; border-radius: 999px; font-weight: 800; font-size: 14.5px; text-decoration: none; transition: transform .15s; }
.eigo-cta .links a:hover { transform: translate(-1px, -2px); }
.eigo-cta .links a.main { background: #1d1a16; color: var(--yellow); }
.eigo-cta .links a.main::after { content: ' →'; }
.eigo-cta.home { grid-template-columns: 56px 1fr; margin-top: 14px; padding: 12px 14px; box-shadow: 4px 4px 0 rgba(0, 0, 0, .35); }
.eigo-cta.home img { width: 56px; height: 56px; }
.eigo-cta.home .t b { font-size: 19px; }
@media (max-width: 600px) {
  .eigo-cta, .eigo-cta.home { grid-template-columns: 48px 1fr; padding: 12px; gap: 10px 10px; }
  .eigo-cta img, .eigo-cta.home img { width: 48px; height: 48px; }
  .eigo-cta .t b { font-size: 18px; }
  .eigo-cta .t small { font-size: 13px; }
  .eigo-cta .links a { font-size: 13.5px; padding: 7px 11px; }
}

/* トップ：スマホで長くなりすぎないように（2026-11-03） */
.home-sum .hitokoto { font-family: var(--head); font-size: 19px; line-height: 1.6; font-weight: 700; }
.home-sum .more { display: inline-block; margin-top: 12px; }
/* 見出しの横の「すべて見る」で見出しが細く押しつぶされないよう、せまい画面では下に回す */
.sec-head > div:first-child { flex: 1 1 240px; }
@media (max-width: 760px) {
  .home-hero .hero-art img, .home-hero .cta-row, .home-hero .pick-ask { display: none; }
  .home-hero .lead { margin-bottom: 12px; }
  .en-home .en-grid > :nth-child(n+3) { display: none; }
  .home-news > li > p, .home-news .src { display: none; }
}