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/* Editorial layout inspired by the supplied OGAWA reference. */
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/* Supplied student work and classroom photography */
.opening-work{position:absolute;left:6%;top:25%;width:38%;margin:0}.student-work img{display:block;width:100%;height:auto}.student-work a{display:block}.student-work figcaption{display:flex;gap:15px;margin-top:14px;font-size:12px;line-height:1.7;color:#4a5952}.student-work figcaption span{font:12px/1.7 monospace;color:#126987}.opening-work img{max-height:410px;object-fit:contain}.opening-work figcaption{margin-top:20px}.class-scene{padding:0 6% 100px}.class-scene figure{margin:0}.class-scene img{max-height:740px;object-fit:cover;object-position:center}.class-scene figcaption{justify-content:space-between}.lesson-art{grid-column:2/4;grid-row:5;display:grid;grid-template-columns:1fr 1fr;gap:45px;margin-top:35px}.lesson-art figure{margin:0}.lesson-art img{height:480px;object-fit:contain}.work-collection{margin-top:10px;padding-top:60px;border-top:1px solid #b7bdb3}.collection-heading{display:grid;grid-template-columns:1fr 1.5fr 1.2fr;gap:40px;margin-bottom:65px}.collection-heading h2{font-size:30px;line-height:1.6;margin:0}.collection-heading>p:last-child{font-size:15px;line-height:2;margin:0}.work-gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:65px 35px;align-items:start}.work-gallery figure{margin:0}.work-gallery figure:nth-child(3n+2){margin-top:75px}.work-gallery img{max-height:490px;object-fit:contain}.work-gallery a{transition:opacity .2s}.work-gallery a:hover{opacity:.8}.gallery-note{font-size:12px;margin-top:40px;color:#50605a}
@media(max-width:900px){.opening-work{left:5%;width:36%;top:30%}.lesson-art img{height:350px}.work-gallery{grid-template-columns:1fr 1fr}.work-gallery figure:nth-child(3n+2){margin-top:0}.work-gallery figure:nth-child(2n){margin-top:60px}.collection-heading{grid-template-columns:1fr 2fr}.collection-heading>p:last-child{grid-column:2}}
@media(max-width:700px){.opening-work{display:none}.class-scene{padding:0 7% 30px}.class-scene img{max-height:none;object-fit:contain}.lesson-art{display:grid;gap:18px;margin-top:35px}.lesson-art img{height:auto;max-height:350px}.student-work figcaption{font-size:12px;gap:8px}.work-collection{margin-top:65px;padding-top:40px}.collection-heading{display:block;margin-bottom:35px}.collection-heading h2{font-size:27px;margin:20px 0}.work-gallery{gap:35px 18px}.work-gallery figure:nth-child(2n){margin-top:35px}.work-gallery img{max-height:340px}.gallery-note{margin-top:25px}}
@media(max-width:700px){.opening{height:auto;max-height:none;min-height:700px;padding-bottom:165px;flex-wrap:wrap}.vertical-copy{margin-left:auto}.opening-work{display:block;position:static;order:3;width:100%;margin:35px 0 10px}.opening-work img{max-height:350px}.opening-bottom{bottom:25px}}

/* Correct orientation of supplied works. */
.student-work img[src$="work-02.jpg"]{transform:rotate(180deg)}
.student-work a:has(img[src$="work-10.jpg"]),.student-work a:has(img[src$="work-11.jpg"]){aspect-ratio:4/3;position:relative;overflow:hidden}
.student-work img[src$="work-10.jpg"],.student-work img[src$="work-11.jpg"]{position:absolute;left:50%;top:50%;width:75%;height:auto;max-height:none;transform:translate(-50%,-50%) rotate(90deg)}

/* Temporary photo placements, ready for later asset replacement. */
.editorial-photo{margin:0}.editorial-photo img{display:block;width:100%;height:auto}.lesson-placeholder{grid-column:2/4;grid-row:5;margin-top:35px;max-width:900px}.lesson-placeholder img{height:440px;object-fit:contain;background:#eeeee5}.lesson-placeholder img[src$="work-02.jpg"]{transform:rotate(180deg)}.lesson-placeholder img[src$="work-04.jpg"]{object-fit:cover;object-position:center}.photo-interlude{display:grid;grid-template-columns:1.2fr 1fr;gap:12%;align-items:center;padding:30px 9% 110px}.photo-interlude img{max-height:600px;object-fit:contain}.photo-interlude>p{font-size:clamp(26px,3.2vw,44px);line-height:1.9;letter-spacing:.04em}.impact-placeholder{margin:0 0 70px auto;width:78%}.impact-placeholder img{max-height:580px;object-fit:cover;object-position:center}
@media(max-width:700px){.lesson-placeholder{margin-top:30px}.lesson-placeholder img{height:auto;max-height:440px;object-fit:contain}.photo-interlude{padding:10px 7% 65px;gap:25px;grid-template-columns:1fr}.photo-interlude img{max-height:400px}.photo-interlude>p{font-size:27px;margin:0}.impact-placeholder{width:100%;margin-bottom:40px}.impact-placeholder img{max-height:none;object-fit:contain}}

/* Immersive classroom hero with overlaid copy. */
.opening{isolation:isolate;background:#26312e;min-height:720px;height:calc(100svh - 84px);max-height:1100px;color:#fff;display:flex;padding:45px 6% 145px;overflow:hidden}
.opening:before{content:"";position:absolute;inset:0;z-index:-2;background:url('images/hero.jpg') center 48%/cover no-repeat}
.opening:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(9,20,22,.76),rgba(9,20,22,.35) 62%,rgba(9,20,22,.15)),linear-gradient(0deg,rgba(9,20,22,.72),transparent 45%)}
.opening-label{position:absolute;top:36px;left:6%;margin:0;color:#fff;font-size:12px;letter-spacing:.13em}
.vertical-copy{margin:110px 0 40px;padding:0;align-self:center}
.vertical-copy h1{writing-mode:horizontal-tb;color:#fff;font-size:clamp(44px,5.3vw,78px);line-height:1.5;letter-spacing:.045em;font-weight:750;text-shadow:0 2px 20px rgba(0,0,0,.18)}
.opening-bottom{left:6%;right:6%;bottom:32px;border-color:rgba(255,255,255,.5);color:#fff}.opening-bottom a{border-bottom:2px solid #00bfff;padding-bottom:8px}.opening-bottom p{font-size:22px}.opening-bottom span{color:#fff}.opening a:focus-visible{outline-color:#00bfff}
@media(max-width:700px){.opening{min-height:740px;height:calc(100svh - 70px);max-height:1000px;padding:85px 7% 180px;display:flex;flex-wrap:nowrap}.opening:before{background-position:57% center}.opening:after{background:linear-gradient(90deg,rgba(9,20,22,.75),rgba(9,20,22,.3)),linear-gradient(0deg,rgba(9,20,22,.7),transparent 65%)}.opening-label{writing-mode:horizontal-tb;top:28px;left:7%;font-size:10px}.vertical-copy{margin:30px 0 0;padding:0}.vertical-copy h1{writing-mode:horizontal-tb;font-size:clamp(33px,8.5vw,52px);line-height:1.65;letter-spacing:.025em}.opening-bottom{left:7%;right:7%;bottom:26px}.opening-bottom p{font-size:22px}.opening-bottom a{display:table;margin-top:20px}.opening-bottom span{font-size:10px}}

.class-info{background:#f7f6ec}.class-info-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:12%}.teacher h3{font-size:32px;line-height:1.5;margin:0 0 28px}.teacher h3 small{display:block;font:14px/2 Arial,sans-serif;margin-top:8px}.teacher p{font-size:16px;line-height:2}.teacher h4{font-size:22px;margin:35px 0 15px}.class-facts{margin:0;border-top:2px solid #00bfff}.class-facts>div{display:grid;grid-template-columns:95px 1fr;gap:20px;padding:25px 0;border-bottom:1px solid #b7bdb3}.class-facts dt{font-size:14px}.class-facts dd{margin:0;font-size:20px;line-height:1.7}.class-facts small{display:block;font-size:13px;line-height:1.9;margin-top:10px}@media(max-width:700px){.class-info-grid{grid-template-columns:1fr;gap:40px}.teacher h3{font-size:28px}.class-facts>div{grid-template-columns:70px 1fr;gap:15px}.class-facts dd{font-size:18px}}

/* Compact introduction: copy and classroom photograph in one composition. */
.introduction{padding:85px 6% 90px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);column-gap:7%;row-gap:22px;align-items:start}.introduction>.eyebrow{grid-column:1;grid-row:1;margin:0}.introduction>h2{grid-column:1;grid-row:2;font-size:clamp(28px,2.5vw,38px);line-height:1.65;margin:0}.introduction>div:not(.intro-photo){grid-column:1;grid-row:3;max-width:550px;margin:0}.introduction p{font-size:15px;line-height:1.95;margin:0 0 18px}.introduction .intro-photo{grid-column:2;grid-row:1/4;width:100%;max-width:none;margin:0;align-self:center}.intro-photo figure{margin:0}.intro-photo img{width:100%;height:auto;max-height:620px;object-fit:contain}.intro-photo figcaption{font-size:12px;line-height:1.7;margin-top:12px}.introduction+#content{padding-top:65px}@media(max-width:700px){.introduction{padding:55px 7% 45px;grid-template-columns:1fr;gap:22px}.introduction>.eyebrow{grid-column:1;grid-row:1}.introduction>h2{grid-column:1;grid-row:2;font-size:28px;margin:0}.introduction .intro-photo{grid-column:1;grid-row:3;margin:4px 0 5px}.introduction>div:not(.intro-photo){grid-column:1;grid-row:4}.introduction p{font-size:15px;line-height:1.95;margin-bottom:18px}.introduction+#content{padding-top:40px}}

.full-class-details{display:grid;grid-template-columns:1fr 1fr;gap:65px 8%;padding-top:75px;margin-top:60px;border-top:1px solid #b7bdb3}.full-class-details h3{font-size:28px;line-height:1.7;margin:0 0 25px}.full-class-details p,.full-class-details li{font-size:16px;line-height:2}.full-class-details ul{padding-left:22px}.question-list>p:not(.eyebrow){border-bottom:1px solid #b7bdb3;padding-bottom:12px}.support-profile{grid-column:1/-1;max-width:1000px;border-top:2px solid #00bfff;padding-top:40px}.support-profile small{font:14px/1.6 Arial,sans-serif;margin-left:15px}@media(max-width:700px){.full-class-details{grid-template-columns:1fr;gap:40px;padding-top:45px;margin-top:40px}.full-class-details h3{font-size:25px}.full-class-details p,.full-class-details li{font-size:15px}}

.lesson-concept{grid-column:2/4;grid-row:5;margin-top:30px}.lesson-concept img{width:100%;height:auto;object-fit:contain}.lesson-concept figcaption{font-size:12px;color:#52635a;margin-top:10px;line-height:1.6}@media(max-width:700px){.lesson-concept{margin-top:25px}}

/* =========================================================
   Section rhythm: 01–04 alternating backgrounds + unified headings
   ========================================================= */
:root{--bg-a:#f7f6ec;--bg-b:#e6f0f2}

/* 背景色を交互に（A: 01・03 / B: 02・04） */
#main>#introduction,#main>#content,#main>#result,#main>#class-info{padding:110px 6%}
#main>#introduction,#main>#result{background:var(--bg-a)}
#main>#content,#main>#class-info{background:var(--bg-b)}

/* セクション境界は背景色で示すので、作品ブロックの区切り線は不要 */
#result .work-collection{margin-top:0;padding-top:0;border-top:0}

/* 見出しラベル：大きな番号 + 英語 + 日本語 */
.section-label{display:grid;grid-template-columns:auto 1fr;column-gap:14px;align-items:center;align-self:start;align-content:start;margin:0 0 32px;padding:0;font-family:Arial,"Helvetica Neue",sans-serif;color:var(--blue)}
.section-label .section-num{grid-row:1/3;margin:0;padding-right:14px;border-right:1px solid currentColor;font-size:46px;font-weight:700;line-height:1;letter-spacing:0;color:var(--blue)}
.section-label .section-en{margin:0;font-size:13px;font-weight:700;letter-spacing:.14em;white-space:nowrap;text-transform:uppercase;line-height:1.5;color:var(--ink)}
.section-label .section-ja{margin:0;font-family:"Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;font-size:12px;font-weight:500;letter-spacing:.1em;line-height:1.5;color:#5a665e}
.section-head .section-label,.collection-heading .section-label,.introduction>.section-label{margin:0;padding:0}

/* 02：見出し直下の罫線（最初のレッスンの上辺）を外す */
#content .section-head+.lesson{border-top:0}

/* セクション見出し（h2）のサイズ・行間を統一 */
#introduction>h2,.section-head h2,.collection-heading h2{font-size:clamp(26px,2.6vw,36px);line-height:1.6;letter-spacing:0;margin:0}

@media(max-width:700px){
  #main>#introduction,#main>#content,#main>#result,#main>#class-info{padding:70px 6%}
  .section-label{margin-bottom:22px}
  .section-label .section-num{font-size:38px}
  .section-head .section-label,.collection-heading .section-label{margin-bottom:22px}
  #introduction>h2,.section-head h2,.collection-heading h2{font-size:26px}
}
@media(max-width:900px){.collection-heading h2{margin-bottom:20px}}

/* =========================================================
   03 Student Works: uniform grid
   すべての作品を同じ比率(4:5)の白いマットに収める
   ========================================================= */
#result .work-gallery{grid-template-columns:repeat(5,minmax(0,1fr));gap:40px 24px;align-items:start}
#result .work-gallery figure{margin:0}
#result .work-gallery a{position:relative;aspect-ratio:4/5;overflow:hidden;background:#fff;box-shadow:0 0 0 1px rgba(23,32,38,.08)}
#result .work-gallery img{position:absolute;inset:7%;width:86%;height:86%;max-height:none;object-fit:contain}
/* 横向きに回転して見せる作品 */
#result .work-gallery img[src$="work-10.jpg"],#result .work-gallery img[src$="work-11.jpg"]{inset:auto;left:50%;top:50%;width:auto;height:68%;transform:translate(-50%,-50%) rotate(90deg)}
#result .student-work figcaption{margin-top:12px;font-size:12px;line-height:1.6}

@media(max-width:1100px){
  #result .work-gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 20px}
}
@media(max-width:700px){
  #result .work-gallery{gap:28px 14px}
  #result .student-work figcaption{gap:8px;font-size:11px}
}

/* =========================================================
   Lightbox（lightbox.js）
   ========================================================= */
.student-work > a{cursor:zoom-in}
html.lightbox-open{overflow:hidden}
.lightbox{width:100vw;height:100dvh;max-width:none;max-height:none;margin:0;padding:0;border:0;background:transparent;color:#f7f6ec;overflow:hidden}
.lightbox::backdrop{background:rgba(15,22,22,.95)}
.lightbox[open]{display:block;animation:lb-fade .2s ease-out}
@keyframes lb-fade{from{opacity:0}to{opacity:1}}
.lightbox-figure{margin:0;position:absolute;inset:0}
.lightbox-stage{position:absolute;inset:56px 80px 80px;display:grid;place-items:center}
.lightbox-img{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:block;max-width:calc(100vw - 160px);max-height:calc(100dvh - 136px);object-fit:contain;background:#fff;box-shadow:0 10px 40px rgba(0,0,0,.35)}
.lightbox-img[data-rotate="180"]{transform:translate(-50%,-50%) rotate(180deg)}
/* 90°回転：縦横を入れ替えた枠に収める */
.lightbox-img[data-rotate="90"]{max-width:calc(100dvh - 136px);max-height:calc(100vw - 160px);transform:translate(-50%,-50%) rotate(90deg)}
.lightbox-caption{position:absolute;left:80px;right:80px;bottom:24px;display:flex;gap:16px;justify-content:center;align-items:baseline;font-size:14px;line-height:1.6;text-align:left}
.lightbox-count{font:12px/1.6 monospace;color:#7fd6f2;white-space:nowrap}
.lightbox-btn{position:absolute;display:grid;place-items:center;width:48px;height:48px;border:1px solid rgba(247,246,236,.35);border-radius:50%;background:rgba(15,22,22,.4);color:#f7f6ec;font:28px/1 Arial,sans-serif;cursor:pointer;transition:background .2s,border-color .2s}
.lightbox-btn:hover{background:rgba(247,246,236,.15);border-color:#f7f6ec}
.lightbox-btn:focus-visible{outline:3px solid #ffbc20;outline-offset:3px}
.lightbox-btn[hidden]{display:none}
.lightbox-close{top:16px;right:16px;font-size:24px}
.lightbox-prev{left:16px;top:50%;transform:translateY(-50%)}
.lightbox-next{right:16px;top:50%;transform:translateY(-50%)}
@media(max-width:700px){
  .lightbox-stage{inset:64px 12px 140px}
  .lightbox-img{max-width:calc(100vw - 24px);max-height:calc(100dvh - 204px)}
  .lightbox-img[data-rotate="90"]{max-width:calc(100dvh - 204px);max-height:calc(100vw - 24px)}
  .lightbox-caption{left:16px;right:16px;bottom:80px;font-size:13px;gap:10px}
  .lightbox-prev,.lightbox-next{top:auto;bottom:16px;transform:none}
  .lightbox-prev{left:calc(50% - 60px)}
  .lightbox-next{right:calc(50% - 60px)}
}
@media(prefers-reduced-motion:reduce){.lightbox[open]{animation:none}}

/* =========================================================
   04 Class Information: 監修＆サポート / FAQ ブロック
   左に見出し、右に本文の2カラム（講師・概要グリッドと揃える）
   ========================================================= */
.info-block{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);column-gap:12%;row-gap:24px;margin-top:90px;padding-top:40px;border-top:2px solid #00bfff}
.info-block-head .eyebrow{margin:0 0 18px}
.info-block-head h3{font-size:28px;line-height:1.5;margin:0}
.info-block-head h3 small{display:block;font:14px/2 Arial,sans-serif;margin-top:8px}
.info-block-role{margin:12px 0 0;font-size:14px;color:#5a665e}
.info-block-body>p{font-size:16px;line-height:2;margin:0 0 20px}
.info-block-body>p:last-child{margin-bottom:0}
/* FAQ：上下の区切り線をブロック内で完結させる */
.info-faq details:first-child{border-top:1px solid var(--line)}
.info-faq summary{font-size:16px;font-weight:600}
.info-faq details p{margin:16px 0 4px;font-size:15px}
@media(max-width:900px){
  .info-block{grid-template-columns:1fr;margin-top:70px}
}
@media(max-width:700px){
  .info-block{margin-top:56px;padding-top:32px}
  .info-block-head h3{font-size:24px}
  .info-block-body>p{font-size:15px}
  .info-faq summary{font-size:15px}
}
@media print{.info-faq{display:none}}

/* =========================================================
   講師・監修者の写真（名前の左に正方形で配置）
   ========================================================= */
.person{display:flex;align-items:center;gap:24px;margin:0 0 28px}
.person-photo{flex:none;width:200px;height:200px;object-fit:cover;object-position:center 30%;background:#fff;box-shadow:0 0 0 1px rgba(23,32,38,.08)}
.person h3{margin:0}
.teacher .person h3{margin:0}
.info-block-head .person{margin:0}
@media(max-width:700px){
  .person{gap:16px;margin-bottom:22px}
  .person-photo{width:128px;height:128px}
}

/* =========================================================
   ヒーロー：スマホではカントの顔（画像の横78%付近）を画面中央に
   ========================================================= */
@media(max-width:700px){
  .opening:before{background-position:89% center}
}

/* =========================================================
   体験授業申し込み（外部フォームへのリンク）
   ========================================================= */
/* ヘッダー */
.nav-trial{font-size:14px;font-weight:700;padding:10px 22px;background:#00bfff;color:#172026;border:1px solid #00bfff;white-space:nowrap;transition:background .2s,color .2s}
.nav-trial:hover{background:#172026;border-color:#172026;color:#fff}

/* ヒーロー */
.opening-links{display:flex;align-items:center;gap:32px}
.opening-bottom .hero-trial{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;border:0;padding:12px 20px;background:#00bfff;color:#172026;font-weight:700;transition:background .2s}
.opening-bottom .hero-trial:hover{background:#fff}

/* セクション内のCTAブロック */
.trial-cta{display:flex;align-items:center;justify-content:space-between;gap:32px;margin-top:72px;padding:36px 44px;background:#172026;color:#f7f6ec}
.trial-cta-en{margin:0 0 8px;font:700 12px/1.5 Arial,sans-serif;letter-spacing:.18em;color:#00bfff}
.trial-cta-text{margin:0;font-size:18px;font-weight:600;line-height:1.8}
.trial-button{flex:none;display:inline-flex;align-items:center;gap:14px;padding:16px 28px;background:#00bfff;color:#172026;font-size:15px;font-weight:700;white-space:nowrap;transition:background .2s}
.trial-button:hover{background:#fff}
.trial-button span,.hero-trial span{font-family:Arial,sans-serif}

@media(max-width:700px){
  header .nav-cta{display:none}
  .nav-trial{padding:8px 12px;font-size:12px}
  .opening-links{display:block}
  .opening-bottom .hero-trial{display:inline-flex;margin-top:16px;font-size:13px}
  .trial-cta{display:block;margin-top:48px;padding:28px 22px}
  .trial-cta-text{font-size:16px}
  .trial-cta-text br{display:none}
  .trial-button{margin-top:22px;width:100%;justify-content:center}
}
@media print{.nav-trial,.hero-trial,.trial-cta{display:none}}