*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0a0a0a;--bg-alt: #111111;--fg: #e0e0e0;--fg-dim: #888888;--accent: #00ff88;--accent-dim: #00cc6a;--border: #1a1a1a;--font: "Fira Code", "Consolas", "Monaco", monospace;--max-width: 800px;--spacing: 2rem}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font);background:var(--bg);color:var(--fg);line-height:1.7;-webkit-font-smoothing:antialiased}.container{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}.nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background:rgba(10,10,10,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}.nav-logo{font-weight:700;font-size:1.1rem;color:var(--accent);text-decoration:none}.nav-links{display:flex;gap:1.5rem}.nav-links a{color:var(--fg-dim);text-decoration:none;font-size:.9rem;transition:color .2s}.nav-links a:hover{color:var(--accent)}.section{min-height:100vh;display:flex;align-items:center;padding:6rem 0 4rem}.section-title{font-size:1.5rem;font-weight:700;color:var(--accent);margin-bottom:var(--spacing);text-transform:uppercase;letter-spacing:.15em}.hero{text-align:center}.hero-title{font-size:3rem;font-weight:700;color:var(--accent);margin-bottom:1.5rem;letter-spacing:.05em}.hero-mission{font-size:1rem;color:var(--fg);margin-bottom:1.5rem;max-width:650px;margin-left:auto;margin-right:auto}.hero-statement{font-size:1.1rem;font-weight:500;color:var(--accent-dim);border-left:3px solid var(--accent);padding-left:1.5rem;margin-bottom:2.5rem;max-width:650px;margin-left:auto;margin-right:auto;text-align:left}.btn{display:inline-block;padding:.75rem 2rem;background:rgba(0,0,0,0);color:var(--accent);border:1px solid var(--accent);font-family:var(--font);font-size:.9rem;text-decoration:none;text-transform:uppercase;letter-spacing:.1em;transition:all .2s;cursor:pointer}.btn:hover{background:var(--accent);color:var(--bg)}.product-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.product-card{background:var(--bg-alt);border:1px solid var(--border);padding:1.5rem;transition:border-color .2s}.product-card:hover{border-color:var(--accent)}.product-name{font-size:1rem;font-weight:700;color:var(--accent);margin-bottom:.75rem}.product-desc{font-size:.85rem;line-height:1.8;color:var(--fg)}.about p{margin-bottom:1rem}.contact{margin-top:2rem}.challenge-box{margin-top:1.5rem}.challenge-question{margin-bottom:.75rem;font-size:.9rem}.challenge-input-row{display:flex;gap:.75rem;align-items:center}.challenge-input{background:var(--bg);border:1px solid var(--border);color:var(--fg);font-family:var(--font);font-size:.9rem;padding:.75rem 1rem;width:5rem;text-align:center;outline:none;transition:border-color .2s}.challenge-input:focus{border-color:var(--accent)}.btn-sm{padding:.75rem 1.25rem;font-size:.8rem}.challenge-error{margin-top:.75rem;font-size:.85rem;color:#f44}.qrcode-container{display:inline-block;margin-top:1.5rem;padding:.75rem;background:var(--bg);border:1px solid var(--border)}.qrcode-container canvas{display:block}.footer{text-align:center;padding:2rem 0;border-top:1px solid var(--border);color:var(--fg-dim);font-size:.8rem}@media (max-width: 640px){.hero-title{font-size:2rem}.product-grid{grid-template-columns:1fr}.nav{padding:.75rem 1rem}.nav-links{gap:1rem}}