/* ==========================================
   ベースリセット ＆ 共通設定
========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', sans-serif;
    color: #2b2b2b;
    line-height: 1.8;
    background-color: #fff;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
a { 
    text-decoration: none; 
    color: inherit; 
    transition: color 0.3s ease, opacity 0.3s ease, border-color 0.3s ease;
}
a:hover {
    opacity: 0.8;
}

/* 共通パーツ */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
.section {
    padding: 120px 0;
}
.page-section {
    margin-top: 60px; /* 固定ヘッダー分の余白を美しく統一 */
    margin-bottom: auto;
}
.min-height-view {
    min-height: 80vh;
}
.bg-light { background-color: #fcfbf9; }
.bg-dark { background-color: #1a1a1a; color: #fff; }

.section-tag {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.25em; /* 💡 わずかに字間を広げて洗練 */
    color: #bfa15f; /* 上品なゴールド */
    margin-bottom: 20px;
    font-weight: 600;
}
h2 {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: 0.08em; /* 💡 タイトルの字間を広げてモダンに */
    margin-bottom: 60px;
    position: relative;
}
.text-center { text-align: center; }
.btn-wrapper { margin-top: 50px; }

/* ==========================================
   ヘッダー（すりガラス効果とサイズ調整）
========================================== */
.header {
    position: fixed;
    top: 0; 
    left: 0; 
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 40px;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid rgba(234, 234, 234, 0.5);
}
.logo img {
    height: 180px;
    width: auto;
    display: block;
}

/* デスクトップナビゲーション */
.nav-desktop {
    display: flex;
    gap: 35px;
    align-items: center;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.05em;
}

/* 💡 スタイリッシュ化：現在地（カレント）のメニューの下にゴールドの線を引く */
.nav-desktop a:not(.btn-nav) {
    position: relative;
    padding: 4px 0;
    color: #777; /* 通常時は少しトーンを落とす */
}
.nav-desktop a:not(.btn-nav):hover,
.nav-desktop a.current:not(.btn-nav) {
    color: #1a1a1a; /* ホバー時・現在地はくっきり */
}
.nav-desktop a.current:not(.btn-nav)::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #bfa15f;
}

.btn-nav {
    background-color: #1a1a1a;
    color: #fff !important;
    padding: 10px 24px;
    border-radius: 2px;
}
.btn-nav:hover {
    background-color: #bfa15f;
    opacity: 1;
}

/* ==========================================
   ボタン（アクセンチュア風ソリッドデザイン）
========================================== */
.btn-primary {
    display: inline-block;
    background-color: #bfa15f;
    color: #fff;
    padding: 15px 45px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.1em;
    border: 1px solid #bfa15f;
    transition: all 0.3s ease;
}
.btn-primary:hover {
    background-color: #1a1a1a;
    border-color: #1a1a1a;
    opacity: 1;
}
.btn-outline {
    background-color: transparent;
    color: #bfa15f;
}

/* ==========================================
   スマートフォン対応（レスポンシブ共通）
========================================== */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 110;
}
.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: #1a1a1a;
    transition: all 0.3s ease;
}
.nav-sp { display: none; }

@media screen and (max-width: 768px) {
    .header { padding: 10px 20px; }
    .nav-desktop { display: none; }
    .hamburger { display: flex; margin-top: 0;}
    
    .hamburger.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
    
    .nav-sp {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0; right: -100%;
        width: 80%; height: 100vh;
        background-color: rgba(255,255,255,0.98);
        padding: 100px 40px;
        gap: 25px;
        font-size: 18px;
        font-weight: 600;
        transition: right 0.3s ease;
        box-shadow: -5px 0 15px rgba(0,0,0,0.05);
        z-index: 105;
    }
    .nav-sp.active { right: 0; }
    .logo img { height: 130px; width: auto; display: block; }
}

/* ==========================================
   フッター
========================================== */
.footer {
    background-color: #1a1a1a;
    color: #a3a3a3;
    padding: 60px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
.footer-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}
.footer-sns {
    display: flex;
    gap: 25px;
}
.footer-sns a {
    font-size: 22px;
    color: #a3a3a3;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    border-radius: 50px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}
.footer-sns a:hover {
    color: #fff;
    background-color: #bfa15f;
    border-color: #bfa15f;
    opacity: 1;
    transform: translateY(-3px);
}
.copyright {
    font-size: 13px;
    letter-spacing: 0.05em;
    color: #777;
}
@media screen and (max-width: 768px) {
    .footer { padding: 45px 0; }
    .footer-container { gap: 25px; }
    .footer-sns a { width: 40px; height: 40px; font-size: 18px; }
}

html {
    scroll-behavior: smooth; /* これだけで、リンク移動などが心地よく滑らかになります */
}