/* リセット・共通設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    color: #333;
    line-height: 1.6;
    background-color: #f8f9fa;
}

/* 共通コンテナ */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ガラス風ヘッダー */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.logo {
    font-size: 1.2rem;
    font-weight: bold;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    color: #27ae60;
}

.nav ul {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 20px;
}

.nav a {
    text-decoration: none;
    color: #4a5568;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav a:hover {
    color: #27ae60;
}

.btn-nav {
    background: #27ae60;
    color: #fff !important;
    padding: 8px 16px;
    border-radius: 4px;
}

.btn-nav:hover {
    background: #219150;
}

/* ヒーローセクション（ご自身の画像 nature.jpg を使用） */
.hero {
    height: 80vh;
    /* 背景画像を nature.jpg に設定 */
    background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.3)), 
                url('nature.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 10%;
    color: #fff;
    margin-top: 60px;
}

.hero-content h1 {
    font-size: 2.8rem;
    line-height: 1.3;
    margin-bottom: 20px;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-content p {
    font-size: 1.1rem;
    max-width: 600px;
    text-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

/* 3列カード */
.features {
    margin-top: -60px;
    position: relative;
    z-index: 10;
    padding-bottom: 60px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.feature-card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    text-align: center;
}

.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

.feature-card p {
    font-size: 0.9rem;
    color: #666;
    text-align: left;
}

/* 会社概要 */
.company-section {
    padding: 60px 0;
    background: #fff;
}

.company-section h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 40px;
    color: #2c3e50;
}

.company-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.company-table {
    width: 100%;
    border-collapse: collapse;
}

.company-table th, .company-table td {
    padding: 15px;
    border-bottom: 1px solid #eee;
    text-align: left;
}

.company-table th {
    width: 30%;
    background-color: #fcfcfc;
    color: #555;
}

.company-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

/* フッター */
.footer {
    background: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 20px;
    font-size: 0.85rem;
}

/* レスポンシブ対応（スマホ表示） */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        padding: 15px;
    }
    .nav ul {
        margin-top: 10px;
        gap: 10px;
        font-size: 0.85rem;
    }
    .hero {
        height: 65vh;
        padding: 0 20px;
    }
    .hero-content h1 {
        font-size: 1.8rem;
    }
    .company-content {
        grid-template-columns: 1fr;
    }
}