:root {
    --main-navy: #003366;
    --accent-blue: #00ACC1;
    --bg-white: #FFFFFF;
    --bg-gray: #F5F5F5;
    --text-color: #333333;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Noto Sans JP', sans-serif; color: var(--text-color); line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.text-center { text-align: center; }
.section { padding: 80px 0; }
.bg-light { background-color: var(--bg-gray); }

/* ヘッダー調整 */
.site-header { height: 70px; display: flex; align-items: center; background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 1000; }
.header-container { display: flex; justify-content: space-between; align-items: center; width: 100%; }

/* ロゴサイズを50%程度（25px）に縮小 */
.logo img { height: 25px; width: auto; vertical-align: middle; }

.nav-list { display: flex; list-style: none; gap: 20px; }
.nav-list a { text-decoration: none; color: var(--main-navy); font-weight: 700; font-size: 14px; }

/* ボタン */
.btn { display: inline-block; padding: 10px 24px; border-radius: 4px; text-decoration: none; font-weight: 700; border: none; cursor: pointer; transition: 0.3s; font-size: 14px; }
.btn-accent { background: var(--accent-blue); color: #fff; }
.btn-outline { border: 2px solid var(--accent-blue); color: var(--accent-blue); }
.btn-accent:hover { opacity: 0.8; }

/* ヒーローエリア */
.hero { height: 70vh; min-height: 500px; background: url('../img/sokuryoukiki.jpg') center/cover; position: relative; display: flex; align-items: center; color: #fff; }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 51, 102, 0.7); }
.hero-container { position: relative; z-index: 1; }
.hero h1 { font-size: 42px; margin-bottom: 20px; }
.accent-text { color: var(--accent-blue); }
.scroll-down { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); font-family: 'Montserrat'; font-weight: 700; }

/* マップカード */
.map-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-top: 40px; }
.card-inner { background: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); border-top: 6px solid var(--accent-blue); height: 100%; }
.step-label { font-family: 'Montserrat'; font-weight: 700; color: #ccc; }
.concept { font-weight: 700; margin: 10px 0; color: var(--main-navy); }
.check-list { list-style: none; font-size: 14px; margin-top: 15px; }
.check-list li::before { content: "✔"; color: var(--accent-blue); margin-right: 8px; }

/* 製品カード */
.product-grid { display: grid; gap: 30px; margin-top: 40px; }
.product-card { display: flex; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 4px 10px rgba(0,0,0,0.05); }
.product-img { flex: 1; height: 250px; }
.product-img img { width: 100%; height: 100%; object-fit: cover; }
.product-info { flex: 1.5; padding: 30px; }
.tag { font-size: 12px; font-weight: 700; background: var(--bg-gray); padding: 4px 10px; border-radius: 20px; }

/* お問い合わせフォーム */
.contact-section { background: var(--main-navy); color: #fff; }
.contact-container { max-width: 800px; }
.contact-form { background: #fff; color: #333; padding: 40px; border-radius: 8px; margin-top: 30px; }
.form-group { margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
label { display: block; font-weight: 700; margin-bottom: 5px; }
input, textarea { width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 4px; }
.required { color: red; font-size: 12px; }

/* アニメーション用 */
.reveal { opacity: 0; transform: translateY(30px); transition: 0.8s ease-out; }
.reveal.active { opacity: 1; transform: translateY(0); }

/* フッター */
.site-footer { padding: 40px 0; background: var(--main-navy); color: #fff; }
.footer-logo { margin-bottom: 15px; }

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .form-row { grid-template-columns: 1fr; }
    .product-card { flex-direction: column; }
    .hero h1 { font-size: 28px; }
    .main-nav, .header-cta { display: none; }
    .logo img { height: 20px; }
    .site-header { height: 60px; }
}