:root {
    /* エジプトをイメージしたカラーパレット（夕日・砂漠のトーン） */
    --egypt-gold: #e2a845;     /* ピラミッドを照らすゴールド */
    --egypt-brown: #8e4414;    /* 大地の深いブラウン */
    --egypt-sand: #fef7ec;     /* 暖かい砂の色 */
    --egypt-sand-dark: #ebd0a0;/* 砂の影 */
    --egypt-orange: #d15d11;   /* 夕日の強いオレンジ */
    
    --text-main: #333333;
    --footer-bg-color: #3b2011; /* フッターも少しブラウン寄りに */
    --footer-text-color: #ffffff;
}

html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans JP', sans-serif; color: var(--text-main); background-color: #ffffff; margin: 0; line-height: 1.8; letter-spacing: 0.05em; }
h1, h2, h3, h4, h5, .serif { font-family: 'Noto Serif JP', serif; } /* 見出しに明朝体を採用して高級感・ロマンを演出 */
*, *::before, *::after { box-sizing: border-box; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.container-sm { max-width: 900px; margin: 0 auto; padding: 0 16px; }
.section-padding { padding: 4rem 0; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-8 { margin-top: 2rem; }
.sp-only { display: inline; }
.pc-only { display: none; }

/* スムーズスクロール時のヘッダー被り防止 */
.scroll-target { scroll-margin-top: 50px; }

.section-title { position: relative; display: inline-block; font-size: 1.8rem; font-weight: 900; color: var(--egypt-brown); padding-bottom: 0.75rem; letter-spacing: 0.05em; line-height: 1.4; margin-bottom: 2.5rem; text-align: center; }
.section-title::after { content: ''; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%); width: 60px; height: 3px; background: var(--egypt-orange); }
.section-title.white { color: #fff; }
.section-title.white::after { background: var(--egypt-gold); }

.btn-gold { display: inline-flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--egypt-gold), var(--egypt-orange)); color: #fff; font-weight: bold; font-size: 1.1rem; padding: 1rem 3rem; border-radius: 9999px; box-shadow: 0 6px 15px rgba(209, 93, 17, 0.4); transition: all 0.3s; border: none; letter-spacing: 0.1em; }
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(209, 93, 17, 0.6); color: #fff; }

/* パララックス設定 */
.parallax-window, .parallax-section {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
}
/* iOS Safari等でのfixedの挙動不具合対策としての疑似要素パララックス */
@supports (-webkit-touch-callout: none) {
    .parallax-window, .parallax-section { background-attachment: scroll; }
    .parallax-ios-fix { position: relative; overflow: hidden; z-index: 1; }
    .parallax-ios-fix::before { content: ""; position: absolute; top: 0; left: 0; right: 0; bottom: 0; z-index: -1; background-image: inherit; background-size: cover; background-position: center; }
}

.overlay-dark { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.5); z-index: 1; }
.overlay-light { position: absolute; inset: 0; background: rgba(255, 255, 255, 0.85); z-index: 1; }
.overlay-color { position: absolute; inset: 0; background: rgba(59, 32, 17, 0.85); z-index: 1; }
.relative-z10 { position: relative; z-index: 10; }