/* =========================================================
   高橋いつきピアノ教室 KLASSE（浦和）見本HP — 21件目
   顔: 淡萌葱白#EEF0E3(paper) × ピアノ漆黒#161A15(ink) × ダマスク臙脂#4A2036(accent) × 真鍮金#9C7A45(brass・線のみ)
   タイポ: 游明朝(システム・見出し和文) / Playfair Display(欧文・数字) / Noto Sans JP(本文)
   モーション: R15 全画面ズーム(ヒーロー主役) / R17 積み重ねカード(主宰年表)
   / R1 リビール / R9/R10標準 / 下層 G4写真クリップリビール+stagger
   ※R19テキストマスク塗り(クロージング)は自作決めゼリフごと2026-07-22に廃止。CSS(.mask-*)は現在未使用のため保守用に残置。
   安全弁: html.no-js→js / 2.5秒js-fallbackタイマー / reduced-motionで全transform停止でも読める
   コントラストは実装時に00_デザイン指針/tools配下の考え方に沿って全組み合わせをpython実測済み（本文4.5:1以上）。
   brass(#9C7A45)はpaper上で3.45:1のため本文には使わず、罫線・アイコン・大きい飾り文字（eyebrow等）限定で使用。
   ========================================================= */
:root{
  --paper:#EEF0E3;
  --paper-deep:#E3E7D3;
  --card:#F8F9F1;
  --ink:#161A15;
  --ink-line:#2B3126;
  --ink-soft:#4B5347;      /* paper比 6.93:1 実測 */
  --linen:#F4F1E6;     /* ink地の上の明るい本文色。ink比15.57:1実測 */
  --moss:#C4C9B4;    /* ink地の上の副次テキスト。ink比10.36:1実測 */
  --accent:#4A2036;        /* ダマスク臙脂。paper比11.74:1実測 */
  --accent-deep:#3A1A2A;
  --brass:#9C7A45;         /* 線・アイコン専用（paper比3.45:1のため本文NG） */
  --brass-light:#C9A868;   /* ink/accent地の上のラベル用。ink比7.78:1実測 */
  --line:#DCE0CC;
  --mincho:"Yu Mincho","YuMincho","Hiragino Mincho ProN","Noto Serif JP",serif;
  --euro:"Playfair Display",serif;
  --gothic:"Noto Sans JP",sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  font-family:var(--gothic);background:var(--paper);color:var(--ink);
  line-height:1.9;font-size:15.5px;-webkit-font-smoothing:antialiased;overflow-wrap:anywhere;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
main:focus{outline:none}
[id]{scroll-margin-top:82px}
/* 暗地(ヘッダー/ink地/フッター)では臙脂のフォーカスリングが1.3:1で見えないため明色に(codex指摘) */
.site-header :focus-visible,.site-footer :focus-visible,.section.ink :focus-visible,.hero-zoom-stage :focus-visible,.sticky-cta :focus-visible{outline-color:var(--brass-light)}
/* スマホはヘッダーが2段(ブランド+横ナビ)になるためアンカー余白を拡大(codex指摘) */
@media (max-width:860px){[id]{scroll-margin-top:136px}}
h1,h2,h3{text-wrap:balance;font-weight:400}
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--ink);color:var(--linen);padding:.7em 1.3em;font-size:.9rem}
.skip-link:focus{left:0}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- header（常時濃色地・透過にしない＝かどや事故の再発防止） ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(22,26,21,.94);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);transition:background .35s var(--ease),box-shadow .35s var(--ease);border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(22,26,21,.98);box-shadow:0 2px 14px rgba(0,0,0,.2)}
.header-in{max-width:1180px;margin:0 auto;padding:13px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:baseline;gap:.6em;text-decoration:none;color:var(--linen);line-height:1.3}
.brand .b-main{font-family:var(--euro);font-size:1.5rem;letter-spacing:.06em;font-weight:600}
.brand .b-small{font-size:.62rem;letter-spacing:.08em;color:var(--moss)}
@media (max-width:600px){.brand .b-small{display:none}}
.gnav ul{display:flex;gap:2px;list-style:none;flex-wrap:wrap}
.gnav a{display:block;padding:.5em .68em;text-decoration:none;color:var(--linen);font-size:.8rem;letter-spacing:.02em;border-radius:2px;position:relative;white-space:nowrap}
.gnav a::after{content:"";position:absolute;left:.68em;right:.68em;bottom:.3em;height:1.5px;background:var(--brass-light);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.gnav a:hover::after,.gnav a[aria-current="page"]::after{transform:scaleX(1)}
@media (prefers-reduced-motion:reduce){.gnav a::after{transition:none}.gnav a:hover,.gnav a[aria-current="page"]{color:var(--brass-light)}}
@media (max-width:860px){
  .header-in{flex-wrap:wrap;padding:10px 16px}
  .gnav{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;
    -webkit-mask-image:linear-gradient(to right,#000 86%,transparent);mask-image:linear-gradient(to right,#000 86%,transparent)}
  .gnav ul{flex-wrap:nowrap}
  .brand .b-main{font-size:1.28rem}
}

/* ---------- section 共通 ---------- */
.section{padding:88px 22px}
.section.tight{padding:56px 22px}
.section.ink{background:var(--ink);color:var(--linen)}
.section.ink a{color:var(--brass-light)}
.section.paper{background:var(--paper)}
.section.deep{background:var(--paper-deep)}
.section-in{max-width:1180px;margin:0 auto}
.sec-label{font-family:var(--euro);font-weight:600;font-size:.86rem;letter-spacing:.18em;color:var(--accent);display:block;margin-bottom:.9em;text-transform:uppercase}
.section.ink .sec-label{color:var(--brass-light)}
.sec-title{font-family:var(--mincho);font-size:clamp(1.4rem,3vw,2.05rem);letter-spacing:.03em;line-height:1.65;color:var(--ink);margin-bottom:.7em}
.section.ink .sec-title{color:var(--linen)}
.sec-lead{max-width:36em;color:var(--ink-soft)}
.section.ink .sec-lead{color:var(--moss)}
.prose{max-width:38em}
.prose p+p{margin-top:1.1em}
.prose.small{font-size:.88rem;line-height:2;color:var(--ink-soft)}
.note{font-size:.85rem;color:var(--ink-soft)}
.section.ink .note{color:var(--moss)}

.page-head{background:var(--ink);color:var(--linen);padding:64px 22px 48px}
.page-head-in{max-width:1180px;margin:0 auto}
.page-head .sec-label{color:var(--brass-light)}
.page-head h1{font-family:var(--mincho);font-size:clamp(1.7rem,3.8vw,2.5rem);letter-spacing:.03em;margin-bottom:.5em}
.page-head p{color:var(--moss);max-width:40em;font-size:.96rem}

/* ---------- ボタン(R9) ---------- */
.btn{display:inline-block;padding:.85em 1.9em;border-radius:2px;font-size:.9rem;letter-spacing:.04em;
  text-decoration:none;border:1px solid transparent;cursor:pointer;font:inherit;
  transition:transform .12s ease-out,background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease)}
.btn:active{transform:scale(.96)}
@media (prefers-reduced-motion:reduce){.btn{transition:background .01ms linear,color .01ms linear,border-color .01ms linear}.btn:active{transform:none;filter:brightness(.92)}}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep)}
.btn-ghost{background:transparent;color:var(--linen);border-color:rgba(244,241,230,.5)}
.btn-ghost:hover{border-color:var(--brass-light);color:var(--brass-light)}
.btn-line{background:transparent;color:var(--accent);border-color:var(--accent)}
.btn-line:hover{background:var(--accent);color:#fff}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center;margin-top:1.7em}

/* ============================================================
   R15 全画面ズーム（ヒーロー主役・初採用）
   ヒーローの写真自体がトラックの主役。初期は角丸で少しインセットされた状態(scale .84)。
   スクロールでsticky+scale(.84→1)、border-radiusが同時に0へ。コピー(H1等)は常駐、
   ズームしきる手前でキャプションが浮かぶ(demo仕様どおり)。
   no-js/reduced-motionは最初から全画面(静止)で表示。
   ============================================================ */
.hero-zoom-track{position:relative;height:220vh;background:var(--ink)}
.hero-zoom-stage{position:sticky;top:0;height:100vh;overflow:hidden;display:grid;place-items:center;background:var(--ink)}
.hero-zoom-media{position:absolute;inset:0;width:100%;height:100%;overflow:hidden;transform:scale(.84);border-radius:26px;will-change:transform,border-radius;transform-origin:center center}
.hero-zoom-media img{width:100%;height:100%;object-fit:cover;object-position:50% 38%}
.hero-zoom-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,9,.42) 0%,rgba(10,12,9,.18) 38%,rgba(10,12,9,.5) 100%)}
html.js .hero-zoom-media img{animation:kb 16s ease-in-out infinite alternate}
@keyframes kb{from{transform:scale(1)}to{transform:scale(1.06)}}
.hero-zoom-content{position:relative;z-index:3;text-align:left;color:#fff;max-width:820px;padding:0 clamp(20px,5vw,64px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.hero-zoom-content .eyebrow{font-family:var(--euro);letter-spacing:.24em;font-size:.82rem;color:var(--brass-light);text-transform:uppercase;display:inline-block;margin-bottom:1.1em}
.hero-zoom-content h1{font-family:var(--mincho);font-weight:400;font-size:clamp(1.7rem,4.6vw,3rem);line-height:1.65;letter-spacing:.02em;text-shadow:0 2px 22px rgba(0,0,0,.35)}
.hero-zoom-content .h-sub{max-width:32em;color:rgba(244,241,230,.88);margin-top:1.2em;font-size:.98rem;text-shadow:0 1px 14px rgba(0,0,0,.3)}
.hero-zoom-cap{position:absolute;left:0;right:0;bottom:9%;z-index:3;text-align:center;color:#fff;padding:0 22px;opacity:0;transition:opacity .5s var(--ease)}
.hero-zoom-cap p{font-family:var(--mincho);font-size:clamp(1rem,2vw,1.25rem);text-shadow:0 2px 18px rgba(0,0,0,.4)}

html.no-js .hero-zoom-track,html.js-fallback .hero-zoom-track{height:auto}
html.no-js .hero-zoom-stage,html.js-fallback .hero-zoom-stage{position:static;height:92vh;min-height:560px}
html.no-js .hero-zoom-media,html.js-fallback .hero-zoom-media{transform:none;border-radius:0}
html.no-js .hero-zoom-cap,html.js-fallback .hero-zoom-cap{display:none}
@media (prefers-reduced-motion:reduce){
  .hero-zoom-track{height:auto}
  .hero-zoom-stage{position:static;height:92vh;min-height:560px}
  .hero-zoom-media{transform:none!important;border-radius:0}
  .hero-zoom-media img{animation:none!important}
  .hero-zoom-cap{display:none}
}
@media (max-width:680px){.hero-zoom-stage{height:100svh}}

/* ---------- 事実カード ---------- */
.facts{background:var(--ink);color:var(--linen);border-top:1px solid var(--ink-line)}
.facts-in{max-width:1180px;margin:0 auto;padding:36px 22px 52px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.facts .f b{font-family:var(--euro);font-size:clamp(1.3rem,2.6vw,1.75rem);color:var(--brass-light);display:block;line-height:1.3;margin-bottom:.35em}
.facts .f span{font-size:.78rem;color:var(--moss);letter-spacing:.02em}
@media (max-width:760px){.facts-in{grid-template-columns:repeat(2,1fr)}}

/* ---------- 要約(教室の3行) ---------- */
.intro-split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.intro-split figure{margin:0;border-radius:4px;overflow:hidden}
.intro-split figcaption{margin-top:.6em;font-size:.82rem;color:var(--ink-soft)}
@media (max-width:860px){.intro-split{grid-template-columns:1fr;gap:24px}}

/* ---------- コース早見カード ---------- */
.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.course-card{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:30px 26px;transition:transform .3s var(--ease),box-shadow .3s var(--ease);display:flex;flex-direction:column}
@media (hover:hover) and (pointer:fine){html.js .course-card:hover{transform:translateY(-4px);box-shadow:0 14px 32px rgba(30,20,30,.14)}}
@media (prefers-reduced-motion:reduce){html.js .course-card:hover{transform:none}}
.course-card .tag{display:inline-block;font-family:var(--euro);font-size:.72rem;letter-spacing:.1em;color:var(--accent);border:1px solid var(--accent);border-radius:20px;padding:.25em .9em;margin-bottom:1em;align-self:flex-start}
.course-card h3{font-family:var(--mincho);font-size:1.2rem;color:var(--ink);margin-bottom:.55em}
.course-card p{font-size:.88rem;color:var(--ink-soft);flex:1}
.course-card .price{font-family:var(--euro);font-size:1rem;color:var(--accent);margin-top:1em}
.course-card a{display:inline-block;margin-top:1em;font-size:.85rem;text-decoration:underline;text-underline-offset:.25em}
@media (max-width:900px){.course-grid{grid-template-columns:1fr}}

/* ---------- 導線カード（下層への案内） ---------- */
.nav-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px}
.nav-card{background:var(--card);border:1px solid var(--line);border-radius:6px;padding:24px 22px;text-decoration:none;color:var(--ink);display:block;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
@media (hover:hover) and (pointer:fine){html.js .nav-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(30,20,30,.12)}}
@media (prefers-reduced-motion:reduce){html.js .nav-card:hover{transform:none}}
.nav-card .nc-eyebrow{font-family:var(--euro);font-size:.72rem;letter-spacing:.14em;color:var(--accent);text-transform:uppercase}
.nav-card h3{font-family:var(--mincho);font-size:1.12rem;margin-top:.5em;margin-bottom:.5em}
.nav-card p{font-size:.85rem;color:var(--ink-soft)}
.nav-card .faces{display:flex;gap:8px;margin-top:1em}
.nav-card .faces img{width:38px;height:38px;border-radius:50%;object-fit:cover;border:1.5px solid var(--paper)}

/* ============================================================
   [廃止済み・未使用] R19 テキストマスク塗り
   自作決めゼリフ「klasseな演奏を、Klasse全員で。」の演出だったが、
   コピー.mdに承認記載のない決めゼリフのため2026-07-22にindex.htmlから削除。
   HTML側で対象要素(.mask-text/.mask-fill/[data-mask])が無いため以下は死んでいるが、
   将来別の一文で復活させる可能性を考慮しCSSのみ保守用に残置。
   ============================================================ */
.mask-wrap{text-align:center}
.mask-text{font-family:var(--mincho);font-size:clamp(1.5rem,4.4vw,2.6rem);line-height:1.7;letter-spacing:.02em;display:inline-block;position:relative;color:var(--ink-soft);opacity:.34}
.mask-fill{position:absolute;inset:0;color:var(--accent);opacity:1;clip-path:inset(0 100% 0 0);white-space:pre-wrap}
html.js.motion-ready .mask-fill{transition:clip-path 1.1s var(--ease)}
html.js.motion-ready .mask-fill.on{clip-path:inset(0 0 0 0)}
html.no-js .mask-text,html.js-fallback .mask-text{color:var(--accent);opacity:1}
html.no-js .mask-fill,html.js-fallback .mask-fill{display:none}
@media (prefers-reduced-motion:reduce){.mask-text{color:var(--accent);opacity:1}.mask-fill{display:none}}

/* ---------- voice/一言(抑制的) ---------- */
.voice{text-align:center}
.voice p{font-family:var(--mincho);font-size:clamp(1.02rem,1.9vw,1.25rem);color:var(--accent);max-width:28em;margin:0 auto;line-height:2.15}

/* ============================================================
   R17 積み重ねカード（主宰の年表・profile.html）
   ============================================================ */
.story-lead{max-width:38em}
.stack{max-width:880px;margin:56px auto 0;padding:0 22px 8vh}
.stack-card{
  position:sticky;border-radius:8px;padding:clamp(28px,4vw,48px);
  min-height:48vh;display:flex;flex-direction:column;justify-content:center;
  color:var(--linen);background:linear-gradient(150deg,var(--accent),var(--accent-deep));
  box-shadow:0 -10px 36px rgba(20,10,16,.2);transform-origin:center top;overflow:hidden
}
.stack-card:nth-child(1){top:10vh;background:linear-gradient(150deg,#232B1E,#161A15)}
.stack-card:nth-child(2){top:13vh;background:linear-gradient(150deg,#3A2A38,#2A1E28)}
.stack-card:nth-child(3){top:16vh;background:linear-gradient(150deg,#4A2036,#3A1A2A)}
.stack-card:nth-child(4){top:19vh;background:linear-gradient(150deg,#5A2A40,#4A2036)}
.stack-card .n{font-family:var(--euro);font-size:.82rem;letter-spacing:.18em;color:var(--brass-light)}
.stack-card h3{font-family:var(--mincho);font-size:clamp(1.25rem,2.8vw,1.6rem);margin:.5em 0 .6em;line-height:1.6}
.stack-card ul{font-size:.9rem;color:var(--moss);max-width:36em;line-height:2}
.stack-card ul b{color:var(--linen);font-weight:500}
.stack-end{max-width:880px;margin:0 auto;padding:0 22px;text-align:center}

html.no-js .stack-card,html.js-fallback .stack-card{position:relative;top:auto!important;margin-bottom:16px;transform:none!important}
@media (prefers-reduced-motion:reduce){
  .stack-card{position:relative;top:auto!important;margin-bottom:16px;transform:none!important;opacity:1!important}
}

/* ---------- プロフィール見出し・引用 ---------- */
.profile-lead{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:start}
.profile-lead figure{margin:0;border-radius:4px;overflow:hidden}
.profile-lead figcaption{margin-top:.6em;font-size:.82rem;color:var(--ink-soft)}
@media (max-width:860px){.profile-lead{grid-template-columns:1fr;gap:24px}}
blockquote.teachers-quote{border-left:3px solid var(--brass);padding-left:1.2em;margin:1.4em 0;font-size:.92rem;color:var(--ink-soft);max-width:38em}

/* ---------- 講師陣グリッド ---------- */
.teacher-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.teacher-card{background:var(--card);border:1px solid var(--line);border-radius:6px;overflow:hidden;display:grid;grid-template-columns:.85fr 1.15fr}
.teacher-card .t-photo{position:relative;overflow:hidden}
.teacher-card .t-photo img{width:100%;height:100%;object-fit:cover;object-position:top center}
.teacher-card .t-body{padding:26px 24px}
.teacher-card .t-role{font-family:var(--euro);font-size:.7rem;letter-spacing:.12em;color:var(--accent);text-transform:uppercase;display:block;margin-bottom:.6em}
.teacher-card h3{font-family:var(--mincho);font-size:1.3rem;margin-bottom:.5em}
.teacher-card .t-fact{font-size:.85rem;color:var(--accent);margin-bottom:.7em}
.teacher-card p{font-size:.85rem;color:var(--ink-soft);line-height:1.9}
.teacher-card details{margin-top:.8em}
.teacher-card summary{cursor:pointer;font-size:.82rem;color:var(--accent);text-decoration:underline;text-underline-offset:.25em;list-style:none}
.teacher-card summary::-webkit-details-marker{display:none}
.teacher-card details[open] summary{margin-bottom:.6em}
@media (max-width:760px){.teacher-grid{grid-template-columns:1fr}.teacher-card{grid-template-columns:1fr}.teacher-card .t-photo{aspect-ratio:4/3}}

/* ---------- コース目録(courses.html) ---------- */
.roster{max-width:56em}
.cat-block+.cat-block{margin-top:60px;padding-top:60px;border-top:1px solid var(--line)}
.cat-head{display:flex;align-items:baseline;gap:.8em;flex-wrap:wrap;margin-bottom:.6em}
.cat-head h2{font-family:var(--mincho);font-size:1.5rem;color:var(--ink)}
.cat-head .cat-no{font-family:var(--euro);color:var(--accent);font-size:1rem}
.cat-lead{max-width:40em;color:var(--ink-soft);margin-bottom:1.4em}
.cat-body{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:36px;align-items:start}
.cat-photo{border-radius:4px;overflow:hidden}
.cat-photo figcaption{margin-top:.5em;font-size:.8rem;color:var(--ink-soft)}
@media (max-width:860px){.cat-body{grid-template-columns:1fr}.cat-photo{order:-1}}
.plan-table{width:100%;border-collapse:collapse;font-size:.9rem}
.plan-table th,.plan-table td{text-align:left;padding:.7em .5em;border-bottom:1px solid var(--line);vertical-align:top}
.plan-table th{font-weight:500;color:var(--ink-soft);font-size:.78rem;letter-spacing:.04em}
.plan-table .p{font-family:var(--euro);color:var(--accent);white-space:nowrap}
.badge-free{display:inline-block;background:var(--accent);color:#fff;font-size:.74rem;letter-spacing:.04em;padding:.3em .8em;border-radius:20px;margin-right:.5em}

/* ---------- ギャラリー(下層G4クリップリビール共通) ---------- */
.gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.gallery figure{margin:0;background:var(--card);border-radius:4px;overflow:hidden;border:1px solid var(--line);transition:transform .3s var(--ease)}
@media (hover:hover) and (pointer:fine){html.js .gallery figure:hover{transform:translateY(-3px)}}
@media (prefers-reduced-motion:reduce){html.js .gallery figure:hover{transform:none}}
.gallery img{width:100%;aspect-ratio:3/2;object-fit:cover}
.gallery figcaption{padding:.6em .8em .8em;font-size:.8rem;color:var(--ink-soft)}

/* ---------- FAQ（details排他アコーディオン） ---------- */
.faq{max-width:46em}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;position:relative;padding:1.1em 2.3em 1.1em .1em;font-family:var(--mincho);font-size:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:.4em;top:50%;width:9px;height:9px;
  border-right:1.5px solid var(--accent);border-bottom:1.5px solid var(--accent);
  transform:translateY(-70%) rotate(45deg);transition:transform .3s var(--ease)}
.faq details[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.faq .faq-a{padding:0 2.3em 1.3em .1em;font-size:.92rem;color:var(--ink-soft);max-width:38em}
@media (prefers-reduced-motion:reduce){.faq summary::after{transition:none}.faq details[open] summary::after{border-color:var(--accent-deep)}}

/* ---------- 設備紹介(access.html) ---------- */
.pair-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.pair-grid figure{margin:0;border-radius:4px;overflow:hidden}
.pair-grid figcaption{margin-top:.5em;font-size:.82rem;color:var(--ink-soft)}
@media (max-width:760px){.pair-grid{grid-template-columns:1fr}}

/* ---------- 地図(簡易埋め込み枠) ---------- */
.map-frame{border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--card)}
.map-frame iframe{width:100%;height:320px;border:0;display:block}

/* ---------- form ---------- */
.form{max-width:600px}
.form .field{margin-bottom:22px}
.form label{display:block;font-size:.9rem;font-weight:500;margin-bottom:.4em}
.form .req{color:var(--accent);font-size:.75rem;margin-left:.4em}
.form input[type="text"],.form input[type="tel"],.form input[type="email"],.form textarea,.form select{
  width:100%;padding:.75em .9em;border:1px solid var(--ink-soft);border-radius:3px;background:#fff;font:inherit;font-size:16px;color:var(--ink)}
.form textarea{min-height:170px;resize:vertical}
.hp-field{position:absolute;left:-9999px;height:0;overflow:hidden}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--moss);padding:60px 22px 42px}
.footer-in{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:1.1fr 1fr auto;gap:36px}
.site-footer .f-brand{font-family:var(--euro);font-size:1.5rem;color:var(--linen);font-weight:600}
.site-footer .f-name{font-size:.83rem;margin-top:.4em}
.site-footer address{font-style:normal;font-size:.86rem;margin-top:1.2em;line-height:1.95}
.site-footer address b{color:var(--linen);font-weight:400;font-family:var(--mincho)}
.site-footer a{color:var(--moss)}
.site-footer a:hover{color:var(--brass-light)}
.f-note{font-size:.78rem;opacity:.85;margin-top:1.2em;max-width:34em}
.f-nav ul{list-style:none}
.f-nav a{display:block;padding:.28em 0;text-decoration:none;font-size:.86rem}
.copyright{max-width:1180px;margin:40px auto 0;font-size:.74rem;opacity:.85}
@media (max-width:900px){.footer-in{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.footer-in{grid-template-columns:1fr}}

/* ---------- スマホ sticky CTA ---------- */
.sticky-cta{display:none}
@media (max-width:760px){
  .sticky-cta{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;gap:1px;
    background:var(--ink-line);border-top:1px solid var(--ink-line);padding-bottom:env(safe-area-inset-bottom)}
  .sticky-cta a{flex:1;text-align:center;padding:.95em .5em;text-decoration:none;font-size:.85rem;letter-spacing:.02em}
  .sticky-cta .s1{background:var(--accent);color:#fff}
  .sticky-cta .s2{background:var(--ink);color:var(--linen)}
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  input,textarea,select,button{scroll-margin-bottom:80px}
}

/* ---------- R1 リビール ----------
   motion-ready(script.js完走直前に付与)を起点にする。読み込み失敗時はjs-fallbackで即可視化。 */
.rv{opacity:1;transform:none}
html.motion-ready .rv{opacity:0;transform:translateY(14px);transition:opacity .65s var(--ease),transform .65s var(--ease)}
html.motion-ready .rv.on{opacity:1;transform:none}
html.motion-ready .rv-d1{transition-delay:.07s}html.motion-ready .rv-d2{transition-delay:.14s}html.motion-ready .rv-d3{transition-delay:.21s}
html.js-fallback .rv{opacity:1!important;transform:none!important;transition:opacity .4s ease}
@media (prefers-reduced-motion:reduce){html.motion-ready .rv{opacity:1;transform:none;transition:none}}

/* ---------- 下層の仕掛け強化: ギャラリー/目録/カード群のクリップワイプ＋stagger ---------- */
html.motion-ready .gallery.rv,html.motion-ready .teacher-grid.rv,
html.motion-ready .course-grid.rv,html.motion-ready .nav-grid.rv,
html.motion-ready .pair-grid.rv,html.motion-ready .plan-table.rv{opacity:1;transform:none}
html.motion-ready .gallery.rv figure,html.motion-ready .pair-grid.rv figure{clip-path:inset(0 0 100% 0);transition:clip-path .7s var(--ease)}
html.motion-ready .gallery.rv.on figure,html.motion-ready .pair-grid.rv.on figure{clip-path:inset(0 0 0% 0)}
html.motion-ready .teacher-grid.rv .teacher-card,
html.motion-ready .course-grid.rv .course-card,
html.motion-ready .nav-grid.rv .nav-card,
html.motion-ready .plan-table.rv tbody tr{opacity:0;transform:translateY(18px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
html.motion-ready .teacher-grid.rv.on .teacher-card,
html.motion-ready .course-grid.rv.on .course-card,
html.motion-ready .nav-grid.rv.on .nav-card,
html.motion-ready .plan-table.rv.on tbody tr{opacity:1;transform:none}
html.motion-ready .gallery.rv.on figure:nth-child(2),html.motion-ready .teacher-grid.rv.on .teacher-card:nth-child(2),html.motion-ready .course-grid.rv.on .course-card:nth-child(2),html.motion-ready .nav-grid.rv.on .nav-card:nth-child(2){transition-delay:.07s}
html.motion-ready .gallery.rv.on figure:nth-child(3),html.motion-ready .teacher-grid.rv.on .teacher-card:nth-child(3),html.motion-ready .course-grid.rv.on .course-card:nth-child(3),html.motion-ready .nav-grid.rv.on .nav-card:nth-child(3){transition-delay:.14s}
html.motion-ready .gallery.rv.on figure:nth-child(4),html.motion-ready .teacher-grid.rv.on .teacher-card:nth-child(4),html.motion-ready .nav-grid.rv.on .nav-card:nth-child(4){transition-delay:.21s}
html.motion-ready .gallery.rv.on figure:nth-child(5),html.motion-ready .nav-grid.rv.on .nav-card:nth-child(5){transition-delay:.28s}
html.motion-ready .gallery.rv.on figure:nth-child(n+6){transition-delay:.35s}
/* 安全弁: JS失敗・無効 */
html.no-js .gallery figure,html.js-fallback .gallery figure,html.no-js .pair-grid figure,html.js-fallback .pair-grid figure{clip-path:none!important}
html.no-js .teacher-card,html.js-fallback .teacher-card,html.no-js .course-card,html.js-fallback .course-card,
html.no-js .nav-card,html.js-fallback .nav-card,html.no-js .plan-table tbody tr,html.js-fallback .plan-table tbody tr{opacity:1!important;transform:none!important}
@media (prefers-reduced-motion:reduce){
  html.motion-ready .gallery.rv figure,html.motion-ready .pair-grid.rv figure{clip-path:none!important;transition:none}
  html.motion-ready .teacher-grid.rv .teacher-card,html.motion-ready .course-grid.rv .course-card,
  html.motion-ready .nav-grid.rv .nav-card,html.motion-ready .plan-table.rv tbody tr{opacity:1!important;transform:none!important;transition:none}
}

/* ---------- responsive base ---------- */
@media (max-width:600px){
  body{font-size:15px}
  .section{padding:60px 16px}
  .section.tight{padding:44px 16px}
  .cat-head h2{font-size:1.25rem}
  .course-grid{gap:16px}
}