:root{--bg-dark: #080b11;--bg-card: rgba(13, 20, 35, .65);--bg-modal: rgba(10, 15, 26, .95);--accent-cyan: #06b6d4;--accent-emerald: #10b981;--text-primary: #f3f4f6;--text-secondary: #9ca3af;--text-muted: #6b7280;--border-color: rgba(255, 255, 255, .07);--border-glow: rgba(6, 182, 212, .15);--font-sans: "Inter", "Noto Sans JP", sans-serif;--font-display: "Outfit", sans-serif;--in-oklab: ;--in-oklch: }@supports (linear-gradient(in oklab,white,black)){:root{--in-oklab: in oklab;--in-oklch: in oklch}}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;background-color:var(--bg-dark);color:var(--text-primary);font-family:var(--font-sans);font-size:16px;line-height:1.6}body{overflow-x:hidden;background-image:radial-gradient(circle at 10% 20%,rgba(6,182,212,.05) 0%,transparent 40%),radial-gradient(circle at 90% 80%,rgba(16,185,129,.04) 0%,transparent 40%);background-attachment:fixed}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 2rem}.scroll-mt{scroll-margin-top:100px}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;letter-spacing:-.02em;line-height:1.25}a{color:inherit;text-decoration:none;transition:color .2s ease}.text-gradient{background:linear-gradient(135deg var(--in-oklab),var(--accent-cyan),var(--accent-emerald));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.text-accent{color:var(--accent-cyan)}.text-muted{color:var(--text-muted)}.text-xs{font-size:.75rem}.mt-2{margin-top:.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;font-family:var(--font-display);font-weight:600;border-radius:8px;border:1px solid transparent;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);gap:.5rem}.btn-sm{padding:.5rem 1rem;font-size:.875rem}.btn-primary{background:linear-gradient(135deg var(--in-oklab),var(--accent-cyan),var(--accent-emerald));color:#070a13}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 20px 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h2{font-size:1.4rem;margin-top:2rem;margin-bottom:1rem}.modal-content h3{font-size:1.15rem;margin-top:1.5rem;margin-bottom:.75rem;color:var(--accent-cyan)}.modal-content p{font-size:.95rem;color:var(--text-secondary);margin-bottom:1rem}.archive-list{list-style:none;padding-left:0;margin-bottom:1.5rem;display:flex;flex-direction:column;gap:.75rem}.archive-list li{position:relative;padding-left:1.5rem;font-size:.95rem;color:var(--text-secondary)}.archive-list li:before{content:"→";position:absolute;left:0;color:var(--accent-cyan)}.archive-divider{border:0;height:1px;background:var(--border-color);margin:2rem 0}@media (max-width: 1024px){.hero-container{grid-template-columns:1fr;gap:3rem;text-align:center}.hero-content{align-items:center}.hero-actions{justify-content:center}.hero-visual{max-width:500px;margin:0 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invert(1)}.sponsor-logo.logopt-logo{filter:invert(1) contrast(1.1) brightness(1.2)}.sponsor-logo-link:hover .sponsor-logo{opacity:1}.sponsor-logo-link:hover .sponsor-logo.moai-logo{filter:brightness(0) invert(1) drop-shadow(0 0 8px rgba(0,242,254,.6))}.sponsor-logo-link:hover .sponsor-logo.logopt-logo{filter:invert(1) contrast(1.2) brightness(1.4) drop-shadow(0 0 8px rgba(0,242,254,.4))}@media (max-width: 768px){.sponsors-container{flex-direction:column;gap:1rem;text-align:center}.sponsors-logos{gap:2rem;justify-content:center}.sponsor-logo{height:32px}}