@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Noto+Sans+JP:wght@300;400;500;700&display=swap";:root{--bg-primary:#fafaf9;--bg-secondary:#f5f5f4;--bg-glass:#fafaf9d9;--text-primary:#1c1917;--text-secondary:#57534e;--text-muted:#878580;--accent-blue:#0f172a;--accent-blue-light:#334155;--accent-bronze:#854d0e;--accent-bronze-light:#ca8a04;--accent-tint:#1c191708;--border-color:#1c191714;--border-color-hover:#1c191729;--font-sans:"Outfit", "Noto Sans JP", sans-serif;--max-width:1280px;--header-height:80px;--transition-smooth:all .6s cubic-bezier(.16, 1, .3, 1);--transition-fast:all .3s cubic-bezier(.16, 1, .3, 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0;font-size:.9rem;font-weight:400;position:relative}.nav-link:after{content:"";background-color:var(--text-primary);transform-origin:100%;width:100%;height:1px;transition:transform .4s cubic-bezier(.16,1,.3,1);position:absolute;bottom:0;left:0;transform:scaleX(0)}.nav-link:hover{color:var(--text-primary)}.nav-link:hover:after{transform-origin:0;transform:scaleX(1)}.nav-btn{background-color:var(--text-primary);color:var(--bg-primary);transition:var(--transition-fast);border:1px solid var(--text-primary);border-radius:100px;padding:10px 24px;font-size:.85rem;font-weight:500}.nav-btn:hover{color:var(--text-primary);background-color:#0000}.menu-toggle{cursor:pointer;z-index:1001;flex-direction:column;justify-content:space-between;width:24px;height:18px;display:none}.menu-toggle span{background-color:var(--text-primary);width:100%;height:1.5px;transition:var(--transition-fast)}@media 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span{background-color:var(--text-primary);border-radius:50%;width:6px;height:6px}.hero-title{letter-spacing:-.02em;margin-bottom:32px;font-size:clamp(2.5rem,5vw,4.5rem);font-weight:400;line-height:1.15}.hero-title span{font-weight:600}.hero-desc{color:var(--text-secondary);max-width:600px;margin-bottom:40px;font-size:1.1rem;line-height:1.8}@media (width<=1024px){.hero-desc{margin:0 auto 40px}}.hero-actions{gap:16px;display:flex}@media (width<=1024px){.hero-actions{justify-content:center}}.btn-primary{background-color:var(--text-primary);color:var(--bg-primary);border:1px solid var(--text-primary);border-radius:100px;align-items:center;gap:8px;padding:16px 36px;font-size:.95rem;font-weight:500;display:inline-flex}.btn-primary:hover{color:var(--text-primary);background-color:#0000}.btn-secondary{border:1px solid var(--border-color);color:var(--text-primary);border-radius:100px;padding:16px 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(width<=1024px){.concept-grid{grid-template-columns:1fr;gap:40px}}.concept-text{color:var(--text-secondary);font-size:1.15rem;line-height:1.9}.concept-text p{margin-bottom:24px}.concept-diagram{background-color:var(--bg-secondary);border:1px solid var(--border-color);aspect-ratio:1.2;border-radius:12px;flex-direction:column;justify-content:space-between;padding:60px;display:flex;position:relative;overflow:hidden}.diagram-item{z-index:2;justify-content:space-between;align-items:center;display:flex;position:relative}.diagram-label{letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);font-size:.85rem;font-weight:600}.diagram-val{font-size:1.5rem;font-weight:500}.diagram-connecting-lines{border:1px solid 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