:root{--color-primary:#171717;--color-accent:#a3a3a3;--color-bg:#fafafa;--color-text:#555;--color-heading:#171717;--color-bg-alt:#fafafa;--color-footer-bg:#171717;--color-footer-text:rgba(255,255,255,.5);--font-heading:'Inter',sans-serif;--font-body:'Noto Sans JP',sans-serif;--font-en:'Inter',sans-serif;--header-height:72px;--radius:8px;--radius-lg:12px;--color-header-bg:rgba(255,255,255,.95);}
.loading-screen{background:#171717}.loading-logo{color:#a3a3a3;font-family:var(--font-en);font-size:1.5rem;letter-spacing:.2em}
.header .logo{font-weight:700;font-size:1rem;color:#171717}.header.scrolled .logo{color:#171717}
.header .nav-link{font-size:.8rem;color:#555}.header .nav-link::after{background:#a3a3a3}
.section-label{color:#a3a3a3}.section-label::before{background:#a3a3a3}
.btn-primary{background:#171717;color:#fff;border-radius:999px;padding:.75rem 2rem;font-size:.8rem;font-weight:600;display:inline-flex;align-items:center;gap:.5rem;transition:all .3s}
.btn-primary:hover{opacity:.85;transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.15)}
.scale-badge{background:#171717}.scale-badge-dot{background:#a3a3a3}
.footer{background:#171717}