:root {
    --bg-color: #030303;
    --surface-color: #0a0a0c;
    --accent-color: #C5A059;
    --text-main: #Eaeaea;
    --text-muted: #888888;
    --border-color: rgba(255, 255, 255, 0.05);
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Noto Sans JP', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

@media (pointer: fine) { * { cursor: none; } }

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-weight: 300;
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* フィルムグレイン */
.film-grain {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 9999; opacity: 0.04;
    background-image: url('data:image/svg+xml;utf8,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)"/%3E%3C/svg%3E');
}

/* カスタムカーソル */
@media (pointer: coarse) { .cursor-dot, .cursor-outline { display: none; } }
.cursor-dot, .cursor-outline {
    position: fixed; top: 0; left: 0; transform: translate(-50%, -50%);
    border-radius: 50%; z-index: 10000; pointer-events: none;
}
.cursor-dot { width: 6px; height: 6px; background-color: var(--accent-color); }
.cursor-outline { width: 40px; height: 40px; border: 1px solid rgba(197, 160, 89, 0.5); }

/* Navigation */
.top-nav {
    position: absolute; top: 0; width: 100%; padding: 30px 5%; 
    display: flex; justify-content: space-between; align-items: center; z-index: 10;
}
.logo { font-family: var(--font-serif); font-size: 1.5rem; letter-spacing: 0.1em; color: var(--text-main); text-decoration: none; }
.brand-name { font-size: 0.7rem; letter-spacing: 0.2em; color: var(--text-muted); text-transform: uppercase; }

/* Hero Section */
.hero { position: relative; height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.hero-bg {
    position: absolute; top: -10%; left: 0; width: 100%; height: 120%;
    background-image: radial-gradient(circle at center, #1a1a1a 0%, #030303 100%); background-size: cover; z-index: 0;
}
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(to bottom, transparent 0%, var(--bg-color) 95%); z-index: 1; }
.hero-content { position: relative; z-index: 2; text-align: center; padding: 0 20px; }
.hero-title { font-family: var(--font-serif); font-size: clamp(3rem, 12vw, 6rem); letter-spacing: 0.1em; margin-bottom: 1rem; color: #fff; }
.hero-subtitle { font-size: clamp(0.9rem, 4vw, 1.1rem); letter-spacing: 0.15em; color: var(--text-muted); }

/* Scroll Indicator */
.scroll-indicator { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); z-index: 2; text-align: center; color: var(--text-muted); font-size: 0.6rem; letter-spacing: 0.2em; text-transform: uppercase; }
.scroll-indicator .line { width: 1px; height: 30px; background: rgba(255,255,255,0.1); margin: 8px auto 0; position: relative; overflow: hidden; }
.scroll-indicator .line::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: var(--accent-color); animation: scrollLine 2s infinite; }
@keyframes scrollLine { 0% { transform: translateY(-100%); } 100% { transform: translateY(100%); } }

/* Sections Common */
section { padding: 80px 5vw; max-width: 1200px; margin: 0 auto; }
.section-title { font-family: var(--font-serif); font-size: clamp(1.8rem, 8vw, 2.5rem); margin-bottom: 2rem; letter-spacing: 0.1em; }
.concept { text-align: center; padding: 120px 5vw; }
.concept-text { font-size: clamp(1rem, 4vw, 1.1rem); color: var(--text-muted); }

/* Features */
.feature-row { display: flex; align-items: center; gap: 6vw; margin-bottom: 120px; }
.feature-row.reverse { flex-direction: row-reverse; }

.feature-image-wrapper { 
    flex: 1; width: 100%; max-width: 320px; aspect-ratio: 9 / 19.5; margin: 0 auto;
    background-color: #000; border-radius: 36px; border: 8px solid var(--surface-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), inset 0 0 0 1px rgba(255,255,255,0.1); 
    overflow: hidden; position: relative;
    /* top: 0 は削除しました（JSの transform に置き換えたため） */
}

.feature-image-wrapper img {
    width: 100%; height: 100%; object-fit: cover; object-position: center; display: block;
}

.feature-text { flex: 1; }
.feature-number { display: block; color: var(--accent-color); font-family: var(--font-serif); font-size: 1.2rem; margin-bottom: 15px; font-style: italic; }
.feature-title { font-family: var(--font-serif); font-size: clamp(1.5rem, 6vw, 2.2rem); margin-bottom: 15px; }
.feature-desc { font-size: 0.95rem; color: var(--text-muted); }

/* Gallery */
.gallery { max-width: 100%; padding: 80px 0; }
.gallery-title { font-family: var(--font-serif); font-size: 2rem; padding-left: 5vw; margin-bottom: 40px; }
.gallery-container { display: flex; gap: 30px; padding: 0 5vw 40px 5vw; overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
.gallery-container::-webkit-scrollbar { display: none; }
.mockup-card { flex: 0 0 260px; aspect-ratio: 9 / 19.5; background: #000; border: 8px solid var(--surface-color); border-radius: 32px; overflow: hidden; box-shadow: 0 15px 35px rgba(0,0,0,0.5); transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1); }
.mockup-card:hover { transform: scale(0.97); border-color: var(--accent-color); }
.mockup-card img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* CTA */
.cta { text-align: center; padding: 100px 5vw; }
.cta-text { font-family: var(--font-serif); font-size: clamp(1.8rem, 8vw, 3rem); margin-bottom: 40px; }
.cta-button { display: inline-block; padding: 18px 40px; border: 1px solid var(--accent-color); border-radius: 100px; color: var(--accent-color); text-decoration: none; font-size: 0.9rem; letter-spacing: 0.1em; transition: all 0.4s; }
.cta-button:hover { background: var(--accent-color); color: #000; }

/* About Neluven */
.about-brand { background-color: rgba(255,255,255,0.02); border-radius: 20px; padding: 80px 5vw; text-align: center; margin-bottom: 80px; }
.about-container { max-width: 600px; margin: 0 auto; }
.about-title { font-family: var(--font-serif); font-size: 1.8rem; margin-bottom: 1.5rem; letter-spacing: 0.1em; }
.about-text { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 2rem; }
.contact-email { font-size: 1rem; color: var(--accent-color); font-weight: 400; letter-spacing: 0.05em; }

/* Footer */
.footer { text-align: center; padding: 60px 20px; border-top: 1px solid var(--border-color); }
.footer-brand { font-family: var(--font-serif); font-size: 1.8rem; margin-bottom: 10px; }
.footer-links { margin-bottom: 15px; }
.footer-link { color: var(--text-muted); text-decoration: none; font-size: 0.8rem; transition: color 0.3s; }
.footer-link:hover { color: var(--accent-color); }
.copyright { font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; }

/* --- Sub Page (Privacy Policy) Styles --- */
.sub-page .top-nav { position: fixed; background: rgba(3,3,3,0.8); backdrop-filter: blur(10px); }
.policy-main { max-width: 800px; margin: 0 auto; padding: 150px 5vw 100px; }
.policy-header { margin-bottom: 60px; text-align: center; }
.policy-title { font-family: var(--font-serif); font-size: clamp(2.5rem, 10vw, 4rem); color: #fff; margin-bottom: 10px; }
.policy-date { color: var(--accent-color); font-size: 0.9rem; letter-spacing: 0.1em; }
.policy-content section { padding: 40px 0; border-bottom: 1px solid var(--border-color); max-width: 100%; }
.policy-content h2 { font-family: var(--font-serif); color: var(--accent-color); font-size: 1.5rem; margin-bottom: 20px; font-weight: 400; }
.policy-content p, .policy-content ul { color: var(--text-muted); font-size: 1rem; margin-bottom: 20px; }
.policy-content ul { padding-left: 20px; list-style-type: none; }
.policy-content li { margin-bottom: 15px; position: relative; }
.policy-content li::before { content: "•"; color: var(--accent-color); position: absolute; left: -20px; }
.policy-footer { padding-top: 60px; text-align: center; }
.brand-signature { font-family: var(--font-serif); font-size: 2rem; color: #fff; margin-bottom: 30px; }
.back-link { color: var(--accent-color); text-decoration: none; font-size: 0.9rem; border-bottom: 1px solid var(--accent-color); padding-bottom: 5px; transition: opacity 0.3s; }
.back-link:hover { opacity: 0.7; }

/* Utilities & Animations */
.fade-up { opacity: 0; transform: translateY(30px); transition: 1s cubic-bezier(0.16, 1, 0.3, 1); }
.fade-up.is-visible { opacity: 1; transform: translateY(0); }
.fade-in { opacity: 0; transition: 1.5s ease-out; }
.fade-in.is-visible { opacity: 1; }
.reveal-text { overflow: hidden; }
.reveal-text h1, .reveal-text p, .reveal-text h2 { transform: translateY(105%); transition: 1.2s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal-text.is-visible h1, .reveal-text.is-visible p, .reveal-text.is-visible h2 { transform: translateY(0); }
.delay-1 { transition-delay: 0.2s; }

/* --- Mobile Media Queries (修正箇所: 余白の拡大) --- */
@media (max-width: 768px) {
    .mobile-only { display: block; }
    .desktop-only { display: none; }
    .top-nav { padding: 20px 5%; }
    
    /* 修正点: 縦並びの際の隙間(gap)と下の余白を大きくし、重なりを防止 */
    .feature-row, .feature-row.reverse { flex-direction: column; gap: 60px; margin-bottom: 100px; }
    .feature-text { text-align: center; }
    .feature-image-wrapper { max-width: 260px; border-radius: 28px; border-width: 6px; }
    .mockup-card { flex: 0 0 220px; border-radius: 28px; border-width: 6px; }
    
    .magnetic-wrap { width: 100%; }
    .cta-button { width: 80%; max-width: 300px; }
}