:root{--bg-dark:#070913;--bg-card:rgba(15, 23, 42, 0.7);--bg-card-hover:rgba(30, 41, 59, 0.85);--bg-glass:rgba(18, 26, 48, 0.6);--border-glass:rgba(153, 69, 255, 0.2);--border-glass-hover:rgba(20, 241, 149, 0.45);--border-subtle:rgba(255, 255, 255, 0.08);--sol-purple:#9945FF;--sol-green:#14F195;--sol-blue:#00C2FF;--sol-teal:#00E5FF;--sol-indigo:#6366F1;--text-main:#F8FAFC;--text-muted:#94A3B8;--text-dim:#64748B;--font-sans:'Inter', 'Sarabun', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;--grad-primary:linear-gradient(135deg, #9945FF 0%, #00C2FF 50%, #14F195 100%);--grad-text:linear-gradient(135deg, #C084FC 0%, #38BDF8 50%, #34D399 100%);--grad-card:linear-gradient(145deg, rgba(30, 27, 75, 0.35) 0%, rgba(15, 23, 42, 0.65) 100%);--grad-hero:radial-gradient(circle at 50% 0%, rgba(153, 69, 255, 0.18) 0%, rgba(0, 194, 255, 0.12) 35%, rgba(7, 9, 19, 0) 70%);--shadow-glow:0 0 35px rgba(153, 69, 255, 0.2);--shadow-green-glow:0 0 30px rgba(20, 241, 149, 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var(--border-glass)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:4.5rem}.brand-logo{display:flex;align-items:center;gap:.75rem;font-size:1.15rem;font-weight:800;color:var(--text-main);letter-spacing:-.01em}.brand-logo img{width:36px;height:36px}.brand-logo:hover{color:var(--text-main);transform:translateY(-1px)}.nav-links{display:flex;align-items:center;gap:1.75rem;list-style:none}.nav-links a{font-size:.95rem;font-weight:500;color:var(--text-muted);position:relative;padding:.25rem 0}.nav-links a:hover,.nav-links a.active{color:var(--text-main)}.nav-links a.active::after{content:'';position:absolute;bottom:-4px;left:0;width:100%;height:2px;background:var(--grad-primary);border-radius:2px}.header-cta{display:flex;align-items:center;gap:1rem}.mobile-toggle-btn{display:none;background:0 0;border:1px solid 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