/* テンプレート27: 上下固定ナビ + 3カラム画像 + 紫系 */
@import url('https://fonts.googleapis.com/css2?family=Kiwi+Maru:wght@400;500&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Kiwi Maru', 'Yu Gothic', sans-serif;
    font-size: 16px;
    line-height: 1.9;
    color: #374151;
    background: linear-gradient(180deg, #f5f3ff 0%, #ede9fe 100%);
    min-height: 100vh;
    padding-top: 70px;
    padding-bottom: 65px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 30px;
}

/* 上部固定ナビ */
.top-fixed-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%);
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.25);
    z-index: 1000;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.4rem;
    font-weight: 500;
    color: #fff;
    padding: 18px 0;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 5px;
}

.nav-menu a {
    display: block;
    padding: 20px 20px;
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border-top: 3px solid transparent;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #fff;
    background: rgba(255,255,255,0.1);
    border-top-color: #c4b5fd;
}

/* メインコンテンツ */
.main-content {
    padding: 50px 0;
}

.content-box {
    background: #fff;
    border-radius: 24px;
    padding: 60px 70px;
    box-shadow: 0 15px 50px rgba(124, 58, 237, 0.1);
}

.article-header {
    text-align: center;
    margin-bottom: 45px;
}

.article-header h1 {
    font-size: 2.2rem;
    font-weight: 500;
    color: #5b21b6;
    margin-bottom: 15px;
}

.article-header .lead {
    font-size: 1.1rem;
    color: #6b7280;
}

/* 3カラム画像ギャラリー */
.single-image {
    text-align: center;
    margin-bottom: 50px;
}

.single-image img {
    max-width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.15);
}

/* テキストセクション */
.text-section {
    margin-bottom: 40px;
}

.text-section:last-child {
    margin-bottom: 0;
}

.text-section h2 {
    font-size: 1.4rem;
    font-weight: 500;
    color: #5b21b6;
    margin-bottom: 18px;
    padding-left: 18px;
    border-left: 4px solid #7c3aed;
}

.text-section p {
    margin-bottom: 18px;
    text-align: justify;
}

.text-section p:last-child {
    margin-bottom: 0;
}

.text-section.highlight-box {
    background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
    padding: 35px 40px;
    border-radius: 16px;
    margin-bottom: 0;
}

.highlight-box h2 {
    border-left: none;
    padding-left: 0;
    text-align: center;
}

/* フッター */
.site-footer {
    text-align: center;
    padding: 30px;
    color: #6b7280;
    font-size: 0.85rem;
}

/* 下部固定ナビ */
.bottom-fixed-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
    z-index: 1000;
}

.bottom-fixed-nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

.bottom-fixed-nav li {
    flex: 1;
}

.bottom-fixed-nav a {
    display: block;
    padding: 18px 15px;
    text-align: center;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

.bottom-fixed-nav a:hover {
    color: #fff;
    background: rgba(124, 58, 237, 0.3);
    border-bottom-color: #7c3aed;
}

/* レスポンシブ */
@media (max-width: 900px) {
    }

@media (max-width: 768px) {
    body {
        padding-top: 60px;
        padding-bottom: 60px;
    }
    
    .nav-inner {
        flex-direction: column;
        padding: 10px 20px;
    }
    
    .nav-logo {
        padding: 8px 0;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0;
    }
    
    .nav-menu a {
        padding: 12px 14px;
        font-size: 0.8rem;
        border-top: none;
        border-bottom: 3px solid transparent;
    }
    
    .nav-menu a:hover,
    .nav-menu a.active {
        border-top-color: transparent;
        border-bottom-color: #c4b5fd;
    }
    
    .main-content {
        padding: 35px 0;
    }
    
    .content-box {
        padding: 35px 28px;
        border-radius: 18px;
    }
    
    .article-header h1 {
        font-size: 1.7rem;
    }
    
    .text-section h2 {
        font-size: 1.25rem;
    }
    
    .text-section.highlight-box {
        padding: 28px 25px;
    }
    
    .bottom-fixed-nav a {
        padding: 14px 10px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .content-box {
        padding: 28px 20px;
    }
    
    .article-header h1 {
        font-size: 1.5rem;
    }
    
    .text-section h2 {
        font-size: 1.15rem;
    }
    
    .bottom-fixed-nav a {
        padding: 12px 8px;
        font-size: 0.75rem;
    }
}

/* サイトマップ */
.sitemap-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.sitemap-list li {
    margin-bottom: 15px;
    padding-left: 20px;
    position: relative;
}

.sitemap-list li::before {
    content: '›';
    position: absolute;
    left: 0;
    font-weight: bold;
}

.sitemap-list a {
    text-decoration: none;
    transition: all 0.3s ease;
}

.sitemap-list a:hover {
    opacity: 0.7;
}