:root {
    --n-bg: #000000;
    --n-card: #080808;
    --n-border: #151515;
    --n-prime: #00f2ff;
    --n-text: #e0e0e0;
    --n-mute: #555555;
}
body { margin: 0; background: var(--n-bg); color: var(--n-text); font-family: 'Inter', system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
.neutron-header { position: fixed; top: 0; width: 100%; height: 64px; background: rgba(0,0,0,0.8); backdrop-filter: blur(15px); z-index: 2000; border-bottom: 1px solid var(--n-border); }
.neutron-inner { max-width: 1260px; margin: 0 auto; height: 100%; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; }
.orbit-logo img { height: 22px; filter: drop-shadow(0 0 8px var(--n-prime)); }
.orbit-nav { display: flex; list-style: none; gap: 40px; margin: 0; padding: 0; }
.orbit-nav a { color: var(--n-mute); text-decoration: none; font-weight: 700; font-size: 13px; text-transform: uppercase; transition: 0.3s; }
.orbit-nav a:hover, .orbit-nav .fusion-active { color: var(--n-prime); text-shadow: 0 0 10px var(--n-prime); }
.fusion-active { position: relative; }
.fusion-active::after { content: ''; position: absolute; bottom: -23px; left: 0; width: 100%; height: 2px; background: var(--n-prime); box-shadow: 0 0 15px var(--n-prime); }
.plasma-auth-btn { background: rgba(0,242,255,0.1); color: var(--n-prime); padding: 8px 24px; font-weight: 800; text-decoration: none; font-size: 11px; border: 1px solid var(--n-prime); border-radius: 4px; transition: 0.3s; }
.plasma-auth-btn:hover { background: var(--n-prime); color: #000; }
.strata-notice-bar { margin: 90px auto 15px; max-width: 1260px; padding: 0 20px; }
.strata-notice-inner { border: 1px solid var(--n-border); padding: 16px 25px; background: var(--n-card); display: flex; align-items: center; border-radius: 8px; }
.photon-dot { width: 6px; height: 6px; background: var(--n-prime); border-radius: 50%; margin-right: 15px; box-shadow: 0 0 10px var(--n-prime); }
.bento-matrix { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.isotope-tile { display: block; background: var(--n-card); border: 1px solid var(--n-border); border-radius: 12px; text-decoration: none; transition: 0.4s; position: relative; overflow: hidden; }
.isotope-tile:hover { border-color: var(--n-prime); transform: translateY(-8px); box-shadow: 0 20px 50px rgba(0,242,255,0.1); }
.fusion-visual { width: 100%; aspect-ratio: 1.1; display: flex; align-items: center; justify-content: center; background: #000; }
.fusion-visual img { width: 55%; height: auto; transition: 0.6s; filter: brightness(0.8); }
.isotope-tile:hover .fusion-visual img { transform: scale(1.1); filter: brightness(1.1); }
.fusion-details { padding: 25px; border-top: 1px solid var(--n-border); }
.fusion-name { font-size: 15px; font-weight: 700; color: #fff; height: 42px; overflow: hidden; margin-bottom: 20px; line-height: 1.4; }
.fusion-meta { display: flex; justify-content: space-between; align-items: flex-end; }
.fusion-price { font-family: 'Inter', sans-serif; font-size: 22px; font-weight: 900; color: #fff; }
.fusion-price::before { content: "¥"; font-size: 14px; color: var(--n-prime); margin-right: 5px; }
.fusion-sales { font-size: 10px; color: #333; font-family: monospace; font-weight: 800; border: 1px solid #111; padding: 2px 6px; }