@charset "UTF-8";

/* =================================================
   1. 基本設定（タイポグラフィ・余白・カラー変数）
   ================================================= */
:root {
    --royal-blue: #4169E1;      /* パレット：鮮やかで誠実なロイヤルブルー */
    --midnight-navy: #191970;   /* パレット：引き締まったミッドナイトネイビー */
    --bg-light-gray: #F5F5F5;   /* パレット：クリーンなライトグレー */
    --accent-red: #e63946;      /* ★追加：メリハリを生む鮮やかな赤 */
    
    /* コントラストを際立たせるための補助グラデーション */
    --bg-light-gradient: linear-gradient(180deg, #ffffff 0%, var(--bg-light-gray) 100%);
    --bg-navy-gradient: linear-gradient(135deg, #0f172a 0%, var(--midnight-navy) 100%);
    --text-main: #1e293b;
}

body {
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    font-size: 18px; 
    line-height: 1.8;
    color: var(--text-main);
    margin: 0;
    padding: 0;
    background: var(--bg-light-gradient);
    -webkit-font-smoothing: antialiased;
}

.serif {
    font-family: 'Noto Serif JP', serif;
    font-weight: 900;
}

.container {
    width: 92%;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 0;
}

/* =================================================
   2. ヘッダー（写真背景 ＋ グレー透過膜）
   ================================================= */
.hero {
    position: relative; 
    color: #fff; 
    overflow: hidden;
    background-color: #222;
    min-height: 500px;
    display: flex;
    align-items: center;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('header.jpg'); 
    background-size: cover;
    background-position: center;
    z-index: 1;
    transform: scale(1.05); 
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 35, 45, 0.78);
    z-index: 2;
}

.header-container {
    position: relative;
    z-index: 10;
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 80px 0;
}

.logo-area { margin-bottom: 30px; }
.logo { height: 45px; display: block; }

.header-content-flex {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 40px;
}

.h-sub-copy {
    font-family: 'Noto Serif JP', serif;
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: 0.1em;
    margin: 0;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.h-main-title {
    font-family: 'Noto Serif JP', serif;
    font-weight: 900;
    font-size: 3.2rem;
    margin: 15px 0;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: #fff;
    text-shadow: 0 4px 15px rgba(0,0,0,0.3); 
}

.h-main-desc {
    font-family: 'Noto Serif JP', serif;
    font-weight: 700;
    font-size: 1.3rem;
    line-height: 1.6;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.date-info-box {
    border-left: 4px solid var(--accent-red); /* ★ヘッダーのアクセント線に赤を採用 */
}

.date-info-box .date {
    font-family: 'Noto Serif JP', serif;
    font-weight: 800;
    font-size: 2.4rem; /* 【修正】3.5rem から 2.4rem へ小さく調整しました */
    line-height: 1.2;  /* 文字サイズに合わせて行間を最適化 */
    margin-bottom: 5px;
    color: #fff;
    text-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

.date-info-box .time {
    font-size: 1.2rem;
    font-weight: bold;
    color: rgba(255, 255, 255, 0.8);
}

.instructor-photos { display: flex; gap: 10px; flex-shrink: 0; }
.instructor-photos .photo {
    width: 140px; height: 140px;
    object-fit: cover; border-radius: 8px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

/* =================================================
   3. 各セクション・カードデザイン
   ================================================= */
.section-title {
    text-align: center;
    font-size: 2.2rem;
    color: var(--midnight-navy);
    margin: 80px 0 50px;
}
.section-title::after {
    content: ''; display: block; width: 60px; height: 5px;
    background: var(--accent-red); /* ★タイトルの下線を赤にしてメリハリを強調 */
    margin: 20px auto 0; border-radius: 3px;
}

/* 導入セクション */
.intro {
    text-align: center;
    padding: 80px 0 60px;
    background: var(--bg-light-gradient);
}

.intro h2 {
    font-family: 'Noto Serif JP', serif;
    font-weight: 900;
    font-size: 2.2rem;
    color: var(--midnight-navy);
    line-height: 1.5;
    margin-bottom: 40px;
}

.intro-content-flex {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    justify-content: space-between;
    margin-top: 35px;
}

.intro-text-area {
    flex: 1;
}

.intro-text-area p {
    text-align: left;
    margin-bottom: 20px;
    line-height: 1.8;
    color: #334155;
}

/* ★導入の「見えない限界」などのストロング箇所に赤を採用 */
.intro-text-area strong {
    color: var(--accent-red);
}

.intro-image-box-right {
    width: 38%;
    max-width: 380px;
    flex-shrink: 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 12px 24px rgba(25, 25, 112, 0.08);
    border: 3px solid #fff;
}

.intro-side-img {
    width: 100%;
    height: auto;
    display: block;
}

/* 解決策セクション */
.solutions {
    padding: 80px 0;
    background: var(--bg-navy-gradient);
}

.solutions .section-title {
    color: #ffffff;
}

.solution-grid {
    display: flex;
    flex-direction: column;
    gap: 55px; /* 前回の修正に基づき55pxの余白を維持 */
}

.solution-card {
    display: flex;
    align-items: flex-start;
    background: #ffffff; 
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    transition: 0.3s ease;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.solution-card:hover {
    transform: translateX(10px);
    border-color: var(--accent-red); /* ★ホバー時の境界線を赤に */
    box-shadow: 0 15px 40px rgba(230, 57, 70, 0.2);
}

.solution-number {
    font-family: 'Noto Serif JP', serif;
    font-size: 8rem;
    font-weight: 900;
    color: rgba(230, 57, 70, 0.06); /* ★背景の数字を薄い赤にすることで、白ボックス内のアクセントに */
    position: absolute;
    top: -20px;
    right: 20px;
    line-height: 1;
    user-select: none;
}

.solution-content {
    position: relative;
    z-index: 1;
}

.solution-card h4 {
    font-size: 1.8rem;
    color: var(--midnight-navy);
    margin: 0 0 15px 0;
    display: flex;
    align-items: center;
    font-weight: bold;
}

.solution-card h4::before {
    content: '';
    width: 12px;
    height: 12px;
    background: var(--accent-red); /* ★見出しの前のドットに赤を採用 */
    border-radius: 50%;
    margin-right: 15px;
    box-shadow: 0 0 8px rgba(230, 57, 70, 0.4);
}

.solution-card p {
    font-size: 1.1rem;
    color: #475569;
    margin: 0;
    line-height: 1.8;
}

/* 特典カード */
.benefits {
    margin-bottom: 60px;
    background-color: #ffffff;
}

.benefit-grid { display: flex; gap: 20px; margin-bottom: 30px; }
.benefit-card {
    flex: 1; background: var(--bg-light-gray); padding: 40px 25px; border-radius: 15px;
    text-align: center; border: 1px solid #e2e8f0; transition: 0.3s ease;
}
.benefit-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-red);
    box-shadow: 0 15px 35px rgba(230, 57, 70, 0.1);
}
.benefit-label { 
    background: var(--accent-red); /* ★特典ラベルにメリハリの赤を採用 */
    color: #fff; 
    padding: 5px 20px; 
    border-radius: 20px; 
    font-size: 0.9rem; 
    font-weight: bold; 
    margin-bottom: 15px; 
    display: inline-block; 
}
.benefit-name { font-size: 1.4rem; font-weight: bold; color: var(--midnight-navy); margin: 10px 0; }
.benefit-desc {
    font-size: 0.95rem;
    color: #475569;
    line-height: 1.5;
}
.benefit-note {
    text-align: center;
    font-size: 0.95rem;
    color: #475569;
    margin-top: 25px;
    font-weight: bold;
}

/* スケジュール */
.schedule {
    background-color: #ffffff;
}
.day-summary { display: flex; flex-direction: column; gap: 50px; }
.day-card {
    background: #ffffff; border-radius: 20px; padding: 55px 35px 35px;
    position: relative; box-shadow: 0 10px 30px rgba(25, 25, 112, 0.03); border: 1px solid #e2e8f0;
}
.day-header {
    position: absolute; top: -20px; left: 30px;
    background: linear-gradient(90deg, var(--midnight-navy), var(--royal-blue));
    color: #fff; padding: 8px 35px; border-radius: 40px; font-weight: bold; font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(25, 25, 112, 0.15);
}
.day-impact-title {
    margin: 0 0 20px 0;
    border-left: 5px solid var(--accent-red); /* ★スケジュールカードの左ラインに赤を採用 */
    padding-left: 20px;
}
.day-sub {
    display: block;
    font-size: 0.9rem;
    color: var(--accent-red); /* ★Day1/2のサブ文字を赤に変更 */
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 5px;
}
.day-card h4 {
    margin: 0;
    font-size: 1.8rem;
    color: var(--midnight-navy);
    line-height: 1.4;
}
.day-card p {
    color: #334155;
}

/* =================================================
   4. 講師紹介
   ================================================= */
.instructors {
    background-color: var(--bg-light-gray);
}
.instructor-card {
    background: #fff; padding: 40px; border-radius: 15px;
    margin-bottom: 40px; box-shadow: 0 10px 25px rgba(0,0,0,0.03); border-top: 6px solid var(--royal-blue);
}
.inst-header-flex { display: flex; align-items: center; gap: 30px; margin-bottom: 25px; border-bottom: 1px solid #e2e8f0; padding-bottom: 20px; }
.inst-photo-box {
    width: 130px; height: 130px; border-radius: 50%; overflow: hidden;
    flex-shrink: 0; border: 4px solid var(--bg-light-gray); box-shadow: 0 5px 15px rgba(25, 25, 112, 0.1);
}
.inst-photo { width: 100%; height: 100%; object-fit: cover; }
.inst-role { font-size: 0.95rem; color: var(--royal-blue); font-weight: bold; display: block; margin-bottom: 5px; }
.inst-name-box h4 { margin: 0; color: var(--midnight-navy); font-size: 1.6rem; }
.inst-name-box h4 span { font-size: 1rem; color: #64748b; font-weight: normal; margin-left: 10px; }
.inst-intro { color: var(--midnight-navy); font-size: 1.3rem; margin-bottom: 10px; }
.inst-text-content p {
    margin-bottom: 1.5em;
    text-align: justify;
    color: #334155;
}
.inst-text-content p:last-child { margin-bottom: 0; }

/* =================================================
   5. 価格セクション・開催概要
   ================================================= */
.price-highlight {
    text-align: center;
    padding: 80px 0;
    background: var(--bg-navy-gradient);
    margin: 0;
}

.special-badge {
    display: inline-block;
    background: var(--accent-red); /* ★特別バッジに目を引く赤を採用 */
    color: #fff;
    padding: 8px 30px;
    border-radius: 50px;
    font-size: 1.1rem;
    margin-bottom: -15px;
    position: relative;
    z-index: 2;
    box-shadow: 0 4px 12px rgba(230, 57, 70, 0.4);
}

.price-card-top {
    background: #ffffff; 
    border: 2px solid var(--accent-red); /* ★価格ボックスの枠線を赤に変更 */
    border-radius: 20px;
    padding: 60px 30px 40px;
    box-shadow: 0 20px 45px rgba(0,0,0,0.15);
    max-width: 750px;
    margin: 0 auto;
}

.price-intro {
    font-size: 1.1rem;
    color: #475569;
    line-height: 1.6;
    margin-bottom: 20px;
    font-weight: bold;
}

.main-price {
    font-size: 4rem;
    color: var(--accent-red); /* ★一番アピールしたい「39,600」の数字を赤に変更 */
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.main-price .tax-in {
    font-size: 1.2rem;
    color: #64748b;
    writing-mode: vertical-rl;
    margin-right: 10px;
}

.main-price .unit {
    font-size: 1.5rem;
    color: #64748b;
    align-self: flex-end;
    margin-bottom: 15px;
}

.price-note {
    font-size: 0.95rem;
    color: #64748b;
    margin-top: 15px;
}

/* 2都市並列カード */
.info {
    background-color: #ffffff;
}
.city-double-columns {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin-top: 30px;
}

.city-card-box {
    flex: 1;
    max-width: 440px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 15px 35px rgba(25, 25, 112, 0.05);
    border: 1px solid #e2e8f0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.city-card-header {
    padding: 20px;
    text-align: center;
    font-size: 1.2rem; /* 前回の修正サイズを維持 */
    font-weight: bold;
    color: #fff;
    font-family: 'Noto Serif JP', serif;
}
.osaka-theme { background: linear-gradient(135deg, var(--midnight-navy) 0%, var(--royal-blue) 100%); }
.tokyo-theme { background: linear-gradient(135deg, var(--accent-red) 0%, #b82330) !important; } /* ★東京開催のヘッダーを赤に変更 */

.city-card-body {
    padding: 35px 25px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.city-row {
    display: flex;
    margin-bottom: 20px;
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 15px;
    font-size: 0.95rem;
}
.city-row:last-of-type { border-bottom: none; }

.city-label {
    width: 85px;
    font-weight: bold;
    color: var(--midnight-navy);
    flex-shrink: 0;
}
.city-value {
    color: #334155;
    line-height: 1.6;
}

.info-date-large {
    font-size: 1.15rem; /* 前回の修正サイズを維持 */
    font-weight: bold;
    color: var(--midnight-navy);
}

.map-link {
    display: inline-block;
    color: var(--royal-blue);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: bold;
    border-bottom: 1px solid var(--royal-blue);
    padding-bottom: 2px;
    transition: 0.3s;
}
.map-link:hover {
    opacity: 0.8;
}

/* お申し込みボタン */
.city-cta-btn {
    display: block;
    text-align: center;
    padding: 18px 20px;
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.2rem;
    border-radius: 50px;
    margin-top: auto;
    box-shadow: 0 6px 20px rgba(65, 105, 225, 0.2);
    transition: 0.3s ease;
}
.osaka-btn { background: var(--midnight-navy); }
.osaka-btn:hover { background: var(--royal-blue); transform: translateY(-3px); box-shadow: 0 10px 25px rgba(65, 105, 225, 0.35); }

.tokyo-btn { background: var(--accent-red); } /* ★東京の申し込みCTAを赤に変更 */
.tokyo-btn:hover { background: #b82330; transform: translateY(-3px); box-shadow: 0 10px 25px rgba(230, 57, 70, 0.35); }

/* =================================================
   6. フッター & レスポンシブ
   ================================================= */
.footer {
    background: #0f172a;
    padding: 60px 0 40px;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-nav { margin-bottom: 20px; }
.footer-nav a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}
.footer-nav a:hover { color: #ffffff; text-decoration: underline; }
.copyright { color: #64748b; font-size: 0.85rem; margin: 0; }

@media (max-width: 768px) {
    body { font-size: 19px; line-height: 1.7; }
    .header-content-flex { flex-direction: column; align-items: flex-start; text-align: left; }
    .h-main-title { font-size: 2.3rem; line-height: 1.25; margin: 10px 0; }
    .date-info-box .date { font-size: 1.9rem; letter-spacing: -0.02em; }
    .date-info-box .time { font-size: 1.0rem; }
    
    .instructor-photos { width: 100%; justify-content: flex-start; margin-top: 25px; }
    .instructor-photos .photo { width: 90px; height: 90px; }

    .intro h2 { font-size: 1.6rem; }
    .section-title { font-size: 1.8rem; }
    .solution-card { padding: 30px 20px; }
    .solution-card h4 { font-size: 1.4rem; }
    .solution-number { font-size: 5rem; top: -10px; right: 10px; }
    
    .benefit-grid { flex-direction: column; gap: 15px; }
    .day-card h4 { font-size: 1.5rem; }
    .day-impact-title { padding-left: 15px; }
    
    .instructor-card { padding: 25px 20px; }
    .inst-photo-box { width: 110px; height: 110px; }

    .main-price { font-size: 2.8rem; }
    .price-card-top { padding: 40px 20px 30px; }
    .price-intro { font-size: 0.95rem; }
    
    .info-date-large { font-size: 1.25rem; display: block; margin-bottom: 5px; color: var(--accent-red); } /* ★スマホ版の日付も赤に統一 */
    .city-double-columns { flex-direction: column; gap: 30px; align-items: center; }
    .city-card-box { width: 100%; }
    .city-card-header { font-size: 1.1rem; padding: 15px; }
    .city-card-body { padding: 20px 15px; }
    .city-cta-btn { font-size: 1.1rem; padding: 15px; }
    .intro-content-flex { flex-direction: column-reverse; gap: 25px; }
    .intro-image-box-right { width: 100%; max-width: 320px; margin: 0 auto; }
}