/* --- 基本設定（Noto Sans JP） --- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;700&display=swap');

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.85;
    color: #333;
    background-color: #fcfcfc;
    margin: 0;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- ヘッダー・ナビゲーション --- */
.site-header {
    background: #fff;
    padding: 20px 0;
    text-align: center;
}

.main-nav {
    background: #8ec6d9; /* 以前のテーマカラー */
}

.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.main-nav a {
    display: block;
    padding: 15px 20px;
    color: #fff;
    text-decoration: none;
    font-size: 0.9em;
    font-weight: bold;
    transition: 0.3s;
}

.main-nav a:hover, .main-nav a.active {
    background: rgba(255,255,255,0.2);
}

/* --- ヒーローエリア（今回の目玉） --- */
.hero {
    background: linear-gradient(rgba(0, 40, 80, 0.7), rgba(0, 40, 80, 0.7)), 
                url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?q=80&w=2070&auto=format&fit=crop'); /* ビルの写真 */
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 100px 20px;
    text-align: center;
    border-radius: 0; /* 全幅で見せるため角丸を解除 */
    margin-bottom: 60px;
}

.hero h2 {
    font-size: 2.2em;
    margin-bottom: 20px;
    margin-top: 0;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.hero p {
    font-size: 1.1em;
    max-width: 700px;
    margin: 0 auto 30px;
}

/* --- 見出しの装飾（左棒） --- */
.section-title h2 {
    position: relative;
    padding: 15px 0 15px 25px;
    font-size: 1.6em;
    color: #333;
    border-left: 6px solid #004080;
    background: #f8f9fa;
    margin-top: 60px;
    margin-bottom: 30px;
}

/* --- ぷっくりボタン（統一デザイン） --- */
.contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #004080 0%, #0056b3 100%);
    color: #fff !important;
    text-decoration: none;
    padding: 18px 45px;
    font-size: 1.1em;
    font-weight: 700;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(0, 64, 128, 0.3);
    transition: all 0.3s ease;
    border: none;
}

.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 64, 128, 0.4);
    filter: brightness(1.1);
}

/* --- ブログカード（活動報告・お知らせ） --- */
.blog-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    border: 1px solid #eee;
    transition: 0.3s;
    margin-bottom: 30px;
    display: block;
    text-decoration: none;
    color: inherit;
    overflow: hidden;
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 64, 128, 0.15);
    border-color: #004080;
}

/* --- フッター --- */
.site-footer {
    background: #f8f9fa;
    padding: 60px 0;
    text-align: center;
    border-top: 1px solid #eee;
    margin-top: 80px;
}

/* --- スマホ対応 --- */
@media (max-width: 768px) {
    .hero h2 { font-size: 1.6em; }
    .contact-btn { width: 100%; box-sizing: border-box; }
    .main-nav ul { flex-direction: column; }
    .main-nav a { text-align: center; border-bottom: 1px solid rgba(255,255,255,0.1); }
}