/* ========================= カラーバリアブル ========================= */
:root {
  --accent: #ff6600;
  --ink: #222;
  --muted: #555;
  --bg: #ffeb3b; /* 背景黄色に変更 */
  --card: #fff;
}

/* ========================= グローバルリセット ========================= */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Yu Gothic","Hiragino Kaku Gothic ProN", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}

a {
  color: var(--accent);
  text-decoration: none;
}

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

/* ========================= コンテンツラップ ========================= */
.wrap {
  max-width: 1100px;
  margin: 0 auto;
  background-color: #dcdcdc;
  padding: 0 18px;
  border-radius: 12px;
}

/* ========================= ヘッダー ========================= */
header.hero {
  position: relative;
  height: 70vh;
  min-height: 360px;
  overflow: hidden;
}

header.hero video {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.visually-hidden {
  position: absolute !important;
  height: 1px;
  width: 1px;
  overflow: hidden;
  clip: rect(1px,1px,1px,1px);
  white-space: nowrap;
  border: 0;
  padding: 0;
  margin: -1px;
}

/* ========================= ナビ ========================= */
.topnav {
  position: sticky;
  top: 0;
  background: var(--card);
  z-index: 10;
  border-bottom: 1px solid #eee;
  background-color: #dcdcdc;
}

.navwrap {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
}

.navlogo {
  font-weight: 700;
  letter-spacing: .05em;
}

.navlinks a {
  padding: 8px 10px;
  display: inline-block;
  color: #333;
  font-weight: 700;
  font-size: 1rem;
}

/* ========================= セクション ========================= */
section {
  padding: 56px 18px;
}

h2 {
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  margin-bottom: 8px;
}

p.lead {
  color: var(--muted);
  margin-bottom: 22px;
}

/* ========================= グリッドレイアウト ========================= */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 24px;
  align-items: center;
}

/* ========================= カード共通 ========================= */
.card, .class-card, .instructor-card {
  background-color: var(--card);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.06);
}

.card h3, .instructor-name {
  margin-bottom: 6px;
  font-size: 1.1rem;
}

/* ========================= CTAボタン ========================= */
.btn {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
}

/* ========================= FAQ ========================= */
.faq-item {
  border-bottom: 1px solid #eee;
}

.faq-q {
  width: 100%;
  text-align: left;
  padding: 14px 0;
  font-weight: 700;
  background: none;
  border: 0;
  cursor: pointer;
}

.faq-a {
  display: none;
  padding-bottom: 16px;
  color: var(--muted);
}

.faq-item.active .faq-a {
  display: block;
}

/* ========================= フッター ========================= */
footer {
  background: #111;
  color: #eee;
  padding: 28px 18px;
}

footer a {
  color: #fff;
  text-decoration: underline;
}

/* ========================= 指導者紹介 ========================= */
.instructor-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  padding: 50px 20px;
  background-color: #dcdcdc;
}

.instructor-card {
  display: flex;
  flex-direction: row;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  overflow: hidden;
}

.instructor-photo {
  flex: 0 0 200px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #e0e0e0;
}

.photo-placeholder {
  width: 150px;
  height: 150px;
  background: #ccc;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: bold;
  color: #666;
}

.instructor-profile {
  padding: 20px;
  flex: 1;
}

.instructor-title {
  font-size: 0.95rem;
  color: #555;
  line-height: 1.4;
  margin-bottom: 15px;
}

.instructor-profile p {
  font-size: 0.95rem;
  line-height: 1.5;
  color: #444;
  margin-bottom: 10px;
}

/* ========================= クラスカード ========================= */
/* クラス内容（シンプル版） */
.class-flow-simple {
  margin: 16px 0 20px;
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 16px;
  list-style: "・ ";
  padding-left: 1em;
}

@media (max-width: 640px) {
  .flow-list {
    grid-template-columns: 1fr;
  }
}

/* 画像っぽく見せるループ動画 */
.loop-figure {
  margin-top: 18px;
}

.loop-vid {
  display: block;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  aspect-ratio: 16 / 9; 
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 8px 22px rgba(0,0,0,0.12);
  background: #eee;
  pointer-events: none;
}

/* チャート全体 */
.class-chart {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin: 28px 0;
}

/* 各ステップ */
.chart-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 120px;
  text-align: center;
}

.step-circle {
  background: #e63946; 
  color: #fff;
  font-weight: bold;
  font-size: 1.2rem;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.step-text {
  font-size: 0.95rem;
  line-height: 1.3;
}

/* 矢印 */
.chart-arrow {
  font-size: 1.5rem;
  color: #666;
}

/* スマホ対応 */
@media (max-width: 640px) {
  .class-chart {
    flex-direction: column;
  }
  .chart-arrow {
    transform: rotate(90deg);
  }
}

/* リード文（説明文） */
#class .lead {
  font-size: 1.1rem;
  font-weight: bold;
  max-width: 700px;
  margin: 0 auto 32px;
  line-height: 1.8;
  text-align: center;
}

/* ========================= レスポンシブ ========================= */
@media (max-width: 960px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .instructor-card { flex-direction: column; align-items: center; text-align: center; }
  .instructor-photo { width: 100%; padding: 20px 0; }
  .instructor-profile { padding: 10px 20px 20px; }
  .grid-2 { gap: 16px; }
}

@media (max-width: 640px) {
  header.hero { height: 50vh; }
  .navlinks { display: none; }
  .grid-3 { grid-template-columns: 1fr; }
}

/* ========================= 画像スタイル ========================= */
.feature-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 0.75rem;
}

/* Googleフォーム埋め込みレスポンシブ調整 */
#trial iframe {
  width: 100%;
  max-width: 600px;
  height: 900px;
  border: 0;
  display: block;
  margin: 0 auto;
}

#news, #trial { padding: 80px 18px; }
#trial { background-color: #dcdcdc; padding: 80px 18px; border-radius: 12px; text-align: center; }
#trial .btn { background: #ff6600; color: #fff; font-size: 1.2rem; padding: 16px 24px; transition: transform 0.2s ease; }
#trial .btn:hover { transform: scale(1.05); }
#trial .wrap { background-color:#ffffff; }
#news .wrap { background-color:#ffffff; }

.video-container { position: relative; max-width: 100%; }
.video-container video { width: 100%; height: auto; border-radius: 12px; box-shadow: 0 4px 12px rgba(0,0,0,0.2); }

.class-image { margin: 30px 0; text-align: center; }
.class-image img { max-width: 100%; height: auto; border-radius: 12px; }

.pricing-image { width: 100%; max-width: 1200px; height: auto; display: block; margin: 20px auto 0 auto; border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }

@media (max-width: 960px) { .pricing-image { max-width: 90%; margin-top: 16px; } }
@media (max-width: 640px) { .pricing-image { max-width: 95%; margin-top: 12px; } }
@media (max-width: 768px) { #trial iframe { height: 750px; } }
@media (max-width: 480px) { #trial iframe { height: 650px; } }

.image-row { display: flex; justify-content: center; gap: 16px; margin-top: 20px; max-width: 900px; margin-left: auto; margin-right: auto; }
.image-row img { width: 32%; height: 200px; object-fit: cover; object-position: center; border-radius: 8px; display: block; }

@media (max-width: 640px) { .image-row { flex-direction: column; max-width: 100%; } .image-row img { width: 100%; height: 220px; } }

/* 修正 基本調整（途切れ防止） */
.wrap { max-width: 1200px; margin: auto; padding: 0 16px; box-sizing: border-box; }
img, video, iframe { max-width: 100%; height: auto; display: block; }

/* 画像レイアウト */
.image-row { display: flex; flex-wrap: wrap; gap: 16px; }
.image-row img { flex: 1 1 100%; object-fit: cover; aspect-ratio: 16/9; }

@media (min-width: 768px) {
  .image-row img { flex: 1 1 calc(33.333% - 16px); aspect-ratio: 3/2; }
}

.image-row img { width: 100%; max-width: 400px; height: auto; margin-bottom: 16px; border-radius: 8px; }

/* ============================= */
/* ナビゲーション */
/* ============================= */
nav { background: #222; color: #fff; padding: 10px 0; position: relative; z-index: 1000; }
.nav-container { display: flex; align-items: center; justify-content: flex-start; }
.logo { margin-left: 10px; font-size: 1.2rem; font-weight: bold; color: #fff; }
.navlinks { display: flex; list-style: none; margin-left: auto; gap: 20px; }
.navlinks li a { color: #fff; text-decoration: none; font-size: 1rem; }

/* ============================= */
/* ハンバーガー */
/* ============================= */
.nav-toggle { background: none; border: none; font-size: 2rem; cursor: pointer; color: #fff; margin-right: 10px; display: none; }

/* ============================= */
/* スマホ用フルスクリーンメニュー */
/* ============================= */
@media (max-width: 640px) {
  .navlinks { display: none; flex-direction: column; justify-content: center; align-items: center; position: fixed; top: 0; left: 0; height: 100vh; width: 100%; background: rgba(0,0,0,0.95); gap: 30px; z-index: 999; }
  .navlinks li a { font-size: 1.5rem; color: #fff; }
  .navlinks.active { display: flex; }
  .nav-toggle { display: block; }
}

img { max-width: 100%; height: auto; display: block; margin: 0 auto; }

.container { width: 100%; max-width: 100%; padding: 0; }
.container img { width: 100%; height: auto; display: block; margin: 0 auto; }

@media (min-width: 768px) {
  .image-row { display: flex; justify-content: center; gap: 20px; }
  .image-row img { width: 30%; margin-bottom: 0; }
}